Centrum Select Chewable

Calcium (Calcium Carbonate):

• Indications and usage
• Dosage and administration
• Dosage forms and strengths
• Contraindications
• Warnings and precautions
• Adverse reactions
• Drug interactions
• Use in specific populations
• Overdosage
• Description
• Clinical pharmacology
• Nonclinical toxicology
• Clinical studies
• How supplied/storage and handling
• Patient counseling information
• Centrum Select Chewable (Calcium (Calcium Carbonate)) reviews

1 INDICATIONS AND USAGE

Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate is a phosphate binder indicated to reduce serum phosphorus in patients with end stage renal disease (ESRD).

- Calcium acetate is a phosphate binder indicated for the reduction of serum phosphorus in patients with end stage renal disease. (1)

2 DOSAGE AND ADMINISTRATION

The recommended initial dose of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate for the adult dialysis patient is 2 capsules with each meal. Increase the dose gradually to lower serum phosphorus levels to the target range, as long as hypercalcemia does not develop. Most patients require 3 to 4 capsules with each meal.

- Starting dose is 2 capsules with each meal. (2)

- Titrate the dose every 2 to 3 weeks until acceptable serum phosphorus level is reached. Most patients require 3 to 4 capsules with each meal. (2)

3 DOSAGE FORMS AND STRENGTHS

Capsule: 667 mg Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate capsule.

- Capsule: 667 mg Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate capsule. (3)

4 CONTRAINDICATIONS

Patients with hypercalcemia.

- Hypercalcemia. (4)

5 WARNINGS AND PRECAUTIONS

- Treat mild hypercalcemia by reducing or interrupting Centrum Select Chewable ) acetate and Vitamin D. Severe hypercalcemia may require hemodialysis and discontinuation of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate. (5.1)

- Hypercalcemia may aggravate digitalis toxicity. (5.2)

5.1 Hypercalcemia

Patients with end stage renal disease may develop hypercalcemia when treated with Centrum Select Chewable (Calcium (Calcium Carbonate)), including Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate. Avoid the use of Centrum Select Chewable (Calcium (Calcium Carbonate)) supplements, including Centrum Select Chewable (Calcium (Calcium Carbonate)) based nonprescription antacids, concurrently with Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate.

An overdose of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate may lead to progressive hypercalcemia, which may require emergency measures. Therefore, early in the treatment phase during the dosage adjustment period, monitor serum Centrum Select Chewable (Calcium (Calcium Carbonate)) levels twice weekly. Should hypercalcemia develop, reduce the Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate dosage, or discontinue the treatment, depending on the severity of hypercalcemia

More severe hypercalcemia (Ca >12 mg/dL) is associated with confusion, delirium, stupor and coma. Severe hypercalcemia can be treated by acute hemodialysis and discontinuing Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate therapy.

Mild hypercalcemia (10.5 to 11.9 mg/dL) may be asymptomatic or manifest as constipation, anorexia, nausea, and vomiting. Mild hypercalcemia is usually controlled by reducing the Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate dose or temporarily discontinuing therapy. Decreasing or discontinuing Vitamin D therapy is recommended as well.

Chronic hypercalcemia may lead to vascular calcification and other soft-tissue calcification. Radiographic evaluation of suspected anatomical regions may be helpful in early detection of soft tissue calcification. The long term effect of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate on the progression of vascular or soft tissue calcification has not been determined.

Hypercalcemia (>11 mg/dL) was reported in 16% of patients in a 3 month study of solid dose formulation of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate; all cases resolved upon lowering the dose or discontinuing treatment.

Maintain the serum calcium-phosphorus (Ca x P) product below 55 mg²/dL².

5.2 Concomitant Use with Medications

Hypercalcemia may aggravate digitalis toxicity.

6 ADVERSE REACTIONS

Hypercalcemia is discussed elsewhere [see Warnings and Precautions ].

- The most common (>10%) adverse reactions are hypercalcemia, nausea and vomiting. (6.1)

- In clinical studies, patients have occasionally experienced nausea during Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate therapy. (6)

To report SUSPECTED ADVERSE REACTIONS, contact West-Ward Pharmaceuticals Corp. at 1-800-962-8364 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch

6.1 Clinical Trial Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

In clinical studies, Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate has been generally well tolerated.

Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate was studied in a 3 month, open-label, non-randomized study of 98 enrolled ESRD hemodialysis patients and an alternate liquid formulation of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate was studied in a two week double-blind, placebo-controlled, cross-over study with 69 enrolled ESRD hemodialysis patients. Adverse reactions (>2% on treatment) from these trials are presented in Table 1.

Mild hypercalcemia may be asymptomatic or manifest itself as constipation, anorexia, nausea, and vomiting. More severe hypercalcemia is associated with confusion, delirium, stupor, and coma. Decreasing dialysate Centrum Select Chewable (Calcium (Calcium Carbonate)) concentration could reduce the incidence and severity of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate-induced hypercalcemia. Isolated cases pruritus have been reported, which may represent allergic reactions.

6.2 Postmarketing Experience

Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to estimate their frequency or to establish a causal relationship to drug exposure.

The following additional adverse reactions have been identified during post-approval of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate: dizziness, edema, and weakness.

7 DRUG INTERACTIONS

The drug interaction of Centrum Select Chewable ) acetate is characterized by the potential of Centrum Select Chewable (Calcium (Calcium Carbonate)) to bind to drugs with anionic functions (e.g., carboxyl, and hydroxyl groups). Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate may decrease the bioavailability of tetracyclines or fluoroquinolones via this mechanism.

There are no empirical data on avoiding drug interactions between Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate and most concomitant drugs. When administering an oral medication with Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate where a reduction in the bioavailability of that medication would have a clinically significant effect on its safety or efficacy, administer the drug one hour before or three hours after Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate. Monitor blood levels of the concomitant drugs that have a narrow therapeutic range. Patients taking anti-arrhythmic medications for the control of arrhythmias and anti-seizure medications for the control of seizure disorders were excluded from the clinical trials with all forms of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate.

- Calcium acetate may decrease the bioavailability of tetracyclines or fluoroquinolones. (7)

- When clinically significant drug interactions are expected, administer the drug at least one hour before or at least three hours after Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate or consider monitoring blood levels of the drug. (7)

7.1 Ciprofloxacin

In a study of 15 healthy subjects, a co-administered single dose of 4 Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate tablets, approximately 2.7g, decreased the bioavailability of ciprofloxacin by approximately 50%.

8 USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

Pregnancy Category C:

Centrum Select Chewable ) acetate capsules contains Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate. Animal reproduction studies have not been conducted with Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate, and there are no adequate and well controlled studies of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate use in pregnant women. Patients with end stage renal disease may develop hypercalcemia with Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate treatment [see Warnings and Precautions (5.1 ) ]. Maintenance of normal serum Centrum Select Chewable (Calcium (Calcium Carbonate)) levels is important for maternal and fetal well being. Hypercalcemia during pregnancy may increase the risk for maternal and neonatal complications such as stillbirth, preterm delivery, and neonatal hypocalcemia and hypoparathyroidism. Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate treatment, as recommended, is not expected to harm a fetus if maternal Centrum Select Chewable (Calcium (Calcium Carbonate)) levels are properly monitored during and following treatment.

8.2 Labor and Delivery

The effects of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate on labor and delivery are unknown.

8.3 Nursing Mothers

Centrum Select Chewable ) Acetate Capsules contains Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate and is excreted in human milk. Human milk feeding by a mother receiving Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate is not expected to harm an infant, provided maternal serum Centrum Select Chewable (Calcium (Calcium Carbonate)) levels are appropriately monitored.

8.4 Pediatric Use

Safety and effectiveness in pediatric patients have not been established.

8.5 Geriatric Use

Clinical studies of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other clinical experience has not identified differences in responses between elderly and younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

10 OVERDOSAGE

Administration of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate in excess of the appropriate daily dosage may result in hypercalcemia [see Warnings and Precautions (5.1)].

11 DESCRIPTION

Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate acts as a phosphate binder. Its chemical name is Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate. Its molecular formula is C₄H₆CaO₄, and its molecular weight is 158.17. Its structural formula is:

Each white opaque/blue opaque capsule contains 667 mg of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate USP (anhydrous; Ca(CH₃COO)₂; MW=158.17 grams) equal to 169 mg (8.45 mEq) Centrum Select Chewable (Calcium (Calcium Carbonate)), polyethylene glycol 8000 and magnesium stearate. Each capsule shell contains: black monogramming ink, FD&C Blue #1, FD&C Red #3, gelatin and titanium dioxide. The black monogramming ink contains: ammonium hydroxide, iron oxide black, isopropyl alcohol, n-butyl alcohol, propylene glycol and shellac glaze.

Centrum Select Chewable (Calcium (Calcium Carbonate)) Acetate Capsules are administered orally for the control of hyperphosphatemia in end-stage renal failure.

Chemical Structure

12 CLINICAL PHARMACOLOGY

Patients with ESRD retain phosphorus and can develop hyperphosphatemia. High serum phosphorus can precipitate serum Centrum Select Chewable ) resulting in ectopic calcification. Hyperphosphatemia also plays a role in the development of secondary hyperparathyroidism in patients with ESRD.

12.1 Mechanism of Action

Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate, when taken with meals, combines with dietary phosphate to form an insoluble Centrum Select Chewable (Calcium (Calcium Carbonate)) phosphate complex, which is excreted in the feces, resulting in decreased serum phosphorus concentration.

12.2 Pharmacodynamics

Orally administered Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate from pharmaceutical dosage forms is systemically absorbed up to approximately 40% under fasting conditions and up to approximately 30% under nonfasting conditions. This range represents data from both healthy subjects and renal dialysis patients under various conditions.

13 NONCLINICAL TOXICOLOGY

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

No carcinogenicity, mutagenicity, or fertility studies have been conducted with Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate.

14 CLINICAL STUDIES

Effectiveness of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate in decreasing serum phosphorus has been demonstrated in two studies of the Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate solid oral dosage form.

Ninety-one patients with end-stage renal disease who were undergoing hemodialysis and were hyperphosphatemic (serum phosphorus >5.5 mg/dL) following a 1 week phosphate binder washout period contributed efficacy data to an open-label, non-randomized study.

The patients received Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate 667 mg tablets at each meal for a period of 12 weeks. The initial starting dose was 2 tablets per meal for 3 meals a day, and the dose was adjusted as necessary to control serum phosphorus levels. The average final dose after 12 weeks of treatment was 3.4 tablets per meal. Although there was a decrease in serum phosphorus, in the absence of a control group the true magnitude of effect is uncertain.

The data presented in Table 2 demonstrate the efficacy of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate in the treatment of hyperphosphatemia in end-stage renal disease patients. The effects on serum Centrum Select Chewable (Calcium (Calcium Carbonate)) levels are also presented.

There was a 30% decrease in serum phosphorus levels during the 12 week study period (p<0.01). Two-thirds of the decline occurred in the first month of the study. Serum Centrum Select Chewable (Calcium (Calcium Carbonate)) increased 9% during the study mostly in the first month of the study.

Treatment with the phosphate binder was discontinued for patients from the open-label study, and those patients whose serum phosphorus exceeded 5.5 mg/dL were eligible for entry into a double-blind, placebo-controlled, cross-over study. Patients were randomized to receive Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate or placebo, and each continued to receive the same number of tablets as had been individually established during the previous study. Following 2 weeks of treatment, patients switched to the alternative therapy for an additional 2 weeks.

The phosphate binding effect of Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate is shown in the Table 3.

Overall, 2 weeks of treatment with Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate statistically significantly (p<0.01) decreased serum phosphorus by a mean of 19% and increased serum Centrum Select Chewable (Calcium (Calcium Carbonate)) by a statistically significant (p<0.01) but clinically unimportant mean of 7%.

16 HOW SUPPLIED/STORAGE AND HANDLING

Centrum Select Chewable (Calcium (Calcium Carbonate)) Acetate Capsules

667 mg capsule is supplied as a white opaque/blue opaque capsule, imprinted with “54 215” on the cap and body.

NDC 0615-2303-39: Blistercards of 30 Capsules

NDC 0615-2303-30: Unit-dose Boxes of 30 Capsules

STORAGE

Store at 20° to 25°C (68° to 77°F).

17 PATIENT COUNSELING INFORMATION

Inform patients to take Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate capsules with meals, adhere to their prescribed diets, and avoid the use of Centrum Select Chewable (Calcium (Calcium Carbonate)) supplements including nonprescription antacids. Inform the patients about the symptoms of hypercalcemia [see Warnings and Precautions (5.1) and Adverse Reactions (6.1) ].

Advise patients who are taking an oral medication where reduction in the bioavailability of that medication would have clinically significant effect on its safety or efficacy to take the drug one hour before or three hours after Centrum Select Chewable (Calcium (Calcium Carbonate)) acetate capsules.

Distr. by: West-Ward

Pharmaceuticals Corp.

Eatontown, NJ 07724

10003705/05

Revised April 2016

Calcium (Calcium Phosphate):

• Indications and usage
• Dosage and administration
• Dosage forms and strengths
• Contraindications
• Warnings and precautions
• Adverse reactions
• Drug interactions
• Use in specific populations
• Overdosage
• Description
• Clinical pharmacology
• Nonclinical toxicology
• Clinical studies
• How supplied/storage and handling
• Patient counseling information
• Centrum Select Chewable (Calcium (Calcium Phosphate)) reviews

1 INDICATIONS AND USAGE

Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate is a phosphate binder indicated to reduce serum phosphorus in patients with end stage renal disease (ESRD).

- Calcium acetate is a phosphate binder indicated for the reduction of serum phosphorus in patients with end stage renal disease. (1)

2 DOSAGE AND ADMINISTRATION

The recommended initial dose of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate for the adult dialysis patient is 2 capsules with each meal. Increase the dose gradually to lower serum phosphorus levels to the target range, as long as hypercalcemia does not develop. Most patients require 3 to 4 capsules with each meal.

- Starting dose is 2 capsules with each meal. (2)

- Titrate the dose every 2 to 3 weeks until acceptable serum phosphorus level is reached. Most patients require 3 to 4 capsules with each meal. (2)

3 DOSAGE FORMS AND STRENGTHS

Capsule: 667 mg Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate capsule.

- Capsule: 667 mg Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate capsule. (3)

4 CONTRAINDICATIONS

Patients with hypercalcemia.

- Hypercalcemia. (4)

5 WARNINGS AND PRECAUTIONS

- Treat mild hypercalcemia by reducing or interrupting Centrum Select Chewable ) acetate and Vitamin D. Severe hypercalcemia may require hemodialysis and discontinuation of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate. (5.1)

- Hypercalcemia may aggravate digitalis toxicity. (5.2)

5.1 Hypercalcemia

Patients with end stage renal disease may develop hypercalcemia when treated with Centrum Select Chewable (Calcium (Calcium Phosphate)), including Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate. Avoid the use of Centrum Select Chewable (Calcium (Calcium Phosphate)) supplements, including Centrum Select Chewable (Calcium (Calcium Phosphate)) based nonprescription antacids, concurrently with Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate.

An overdose of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate may lead to progressive hypercalcemia, which may require emergency measures. Therefore, early in the treatment phase during the dosage adjustment period, monitor serum Centrum Select Chewable (Calcium (Calcium Phosphate)) levels twice weekly. Should hypercalcemia develop, reduce the Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate dosage, or discontinue the treatment, depending on the severity of hypercalcemia

More severe hypercalcemia (Ca >12 mg/dL) is associated with confusion, delirium, stupor and coma. Severe hypercalcemia can be treated by acute hemodialysis and discontinuing Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate therapy.

Mild hypercalcemia (10.5 to 11.9 mg/dL) may be asymptomatic or manifest as constipation, anorexia, nausea, and vomiting. Mild hypercalcemia is usually controlled by reducing the Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate dose or temporarily discontinuing therapy. Decreasing or discontinuing Vitamin D therapy is recommended as well.

Chronic hypercalcemia may lead to vascular calcification and other soft-tissue calcification. Radiographic evaluation of suspected anatomical regions may be helpful in early detection of soft tissue calcification. The long term effect of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate on the progression of vascular or soft tissue calcification has not been determined.

Hypercalcemia (>11 mg/dL) was reported in 16% of patients in a 3 month study of solid dose formulation of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate; all cases resolved upon lowering the dose or discontinuing treatment.

Maintain the serum calcium-phosphorus (Ca x P) product below 55 mg²/dL².

5.2 Concomitant Use with Medications

Hypercalcemia may aggravate digitalis toxicity.

6 ADVERSE REACTIONS

Hypercalcemia is discussed elsewhere [see Warnings and Precautions ].

- The most common (>10%) adverse reactions are hypercalcemia, nausea and vomiting. (6.1)

- In clinical studies, patients have occasionally experienced nausea during Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate therapy. (6)

To report SUSPECTED ADVERSE REACTIONS, contact West-Ward Pharmaceuticals Corp. at 1-800-962-8364 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch

6.1 Clinical Trial Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

In clinical studies, Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate has been generally well tolerated.

Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate was studied in a 3 month, open-label, non-randomized study of 98 enrolled ESRD hemodialysis patients and an alternate liquid formulation of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate was studied in a two week double-blind, placebo-controlled, cross-over study with 69 enrolled ESRD hemodialysis patients. Adverse reactions (>2% on treatment) from these trials are presented in Table 1.

Mild hypercalcemia may be asymptomatic or manifest itself as constipation, anorexia, nausea, and vomiting. More severe hypercalcemia is associated with confusion, delirium, stupor, and coma. Decreasing dialysate Centrum Select Chewable (Calcium (Calcium Phosphate)) concentration could reduce the incidence and severity of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate-induced hypercalcemia. Isolated cases pruritus have been reported, which may represent allergic reactions.

6.2 Postmarketing Experience

Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to estimate their frequency or to establish a causal relationship to drug exposure.

The following additional adverse reactions have been identified during post-approval of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate: dizziness, edema, and weakness.

7 DRUG INTERACTIONS

The drug interaction of Centrum Select Chewable ) acetate is characterized by the potential of Centrum Select Chewable (Calcium (Calcium Phosphate)) to bind to drugs with anionic functions (e.g., carboxyl, and hydroxyl groups). Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate may decrease the bioavailability of tetracyclines or fluoroquinolones via this mechanism.

There are no empirical data on avoiding drug interactions between Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate and most concomitant drugs. When administering an oral medication with Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate where a reduction in the bioavailability of that medication would have a clinically significant effect on its safety or efficacy, administer the drug one hour before or three hours after Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate. Monitor blood levels of the concomitant drugs that have a narrow therapeutic range. Patients taking anti-arrhythmic medications for the control of arrhythmias and anti-seizure medications for the control of seizure disorders were excluded from the clinical trials with all forms of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate.

- Calcium acetate may decrease the bioavailability of tetracyclines or fluoroquinolones. (7)

- When clinically significant drug interactions are expected, administer the drug at least one hour before or at least three hours after Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate or consider monitoring blood levels of the drug. (7)

7.1 Ciprofloxacin

In a study of 15 healthy subjects, a co-administered single dose of 4 Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate tablets, approximately 2.7g, decreased the bioavailability of ciprofloxacin by approximately 50%.

8 USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

Pregnancy Category C:

Centrum Select Chewable ) acetate capsules contains Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate. Animal reproduction studies have not been conducted with Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate, and there are no adequate and well controlled studies of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate use in pregnant women. Patients with end stage renal disease may develop hypercalcemia with Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate treatment [see Warnings and Precautions (5.1 ) ]. Maintenance of normal serum Centrum Select Chewable (Calcium (Calcium Phosphate)) levels is important for maternal and fetal well being. Hypercalcemia during pregnancy may increase the risk for maternal and neonatal complications such as stillbirth, preterm delivery, and neonatal hypocalcemia and hypoparathyroidism. Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate treatment, as recommended, is not expected to harm a fetus if maternal Centrum Select Chewable (Calcium (Calcium Phosphate)) levels are properly monitored during and following treatment.

8.2 Labor and Delivery

The effects of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate on labor and delivery are unknown.

8.3 Nursing Mothers

Centrum Select Chewable ) Acetate Capsules contains Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate and is excreted in human milk. Human milk feeding by a mother receiving Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate is not expected to harm an infant, provided maternal serum Centrum Select Chewable (Calcium (Calcium Phosphate)) levels are appropriately monitored.

8.4 Pediatric Use

Safety and effectiveness in pediatric patients have not been established.

8.5 Geriatric Use

Clinical studies of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other clinical experience has not identified differences in responses between elderly and younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

10 OVERDOSAGE

Administration of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate in excess of the appropriate daily dosage may result in hypercalcemia [see Warnings and Precautions (5.1)].

11 DESCRIPTION

Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate acts as a phosphate binder. Its chemical name is Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate. Its molecular formula is C₄H₆CaO₄, and its molecular weight is 158.17. Its structural formula is:

Each white opaque/blue opaque capsule contains 667 mg of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate USP (anhydrous; Ca(CH₃COO)₂; MW=158.17 grams) equal to 169 mg (8.45 mEq) Centrum Select Chewable (Calcium (Calcium Phosphate)), polyethylene glycol 8000 and magnesium stearate. Each capsule shell contains: black monogramming ink, FD&C Blue #1, FD&C Red #3, gelatin and titanium dioxide. The black monogramming ink contains: ammonium hydroxide, iron oxide black, isopropyl alcohol, n-butyl alcohol, propylene glycol and shellac glaze.

Centrum Select Chewable (Calcium (Calcium Phosphate)) Acetate Capsules are administered orally for the control of hyperphosphatemia in end-stage renal failure.

Chemical Structure

12 CLINICAL PHARMACOLOGY

Patients with ESRD retain phosphorus and can develop hyperphosphatemia. High serum phosphorus can precipitate serum Centrum Select Chewable ) resulting in ectopic calcification. Hyperphosphatemia also plays a role in the development of secondary hyperparathyroidism in patients with ESRD.

12.1 Mechanism of Action

Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate, when taken with meals, combines with dietary phosphate to form an insoluble Centrum Select Chewable (Calcium (Calcium Phosphate)) phosphate complex, which is excreted in the feces, resulting in decreased serum phosphorus concentration.

12.2 Pharmacodynamics

Orally administered Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate from pharmaceutical dosage forms is systemically absorbed up to approximately 40% under fasting conditions and up to approximately 30% under nonfasting conditions. This range represents data from both healthy subjects and renal dialysis patients under various conditions.

13 NONCLINICAL TOXICOLOGY

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

No carcinogenicity, mutagenicity, or fertility studies have been conducted with Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate.

14 CLINICAL STUDIES

Effectiveness of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate in decreasing serum phosphorus has been demonstrated in two studies of the Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate solid oral dosage form.

Ninety-one patients with end-stage renal disease who were undergoing hemodialysis and were hyperphosphatemic (serum phosphorus >5.5 mg/dL) following a 1 week phosphate binder washout period contributed efficacy data to an open-label, non-randomized study.

The patients received Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate 667 mg tablets at each meal for a period of 12 weeks. The initial starting dose was 2 tablets per meal for 3 meals a day, and the dose was adjusted as necessary to control serum phosphorus levels. The average final dose after 12 weeks of treatment was 3.4 tablets per meal. Although there was a decrease in serum phosphorus, in the absence of a control group the true magnitude of effect is uncertain.

The data presented in Table 2 demonstrate the efficacy of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate in the treatment of hyperphosphatemia in end-stage renal disease patients. The effects on serum Centrum Select Chewable (Calcium (Calcium Phosphate)) levels are also presented.

There was a 30% decrease in serum phosphorus levels during the 12 week study period (p<0.01). Two-thirds of the decline occurred in the first month of the study. Serum Centrum Select Chewable (Calcium (Calcium Phosphate)) increased 9% during the study mostly in the first month of the study.

Treatment with the phosphate binder was discontinued for patients from the open-label study, and those patients whose serum phosphorus exceeded 5.5 mg/dL were eligible for entry into a double-blind, placebo-controlled, cross-over study. Patients were randomized to receive Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate or placebo, and each continued to receive the same number of tablets as had been individually established during the previous study. Following 2 weeks of treatment, patients switched to the alternative therapy for an additional 2 weeks.

The phosphate binding effect of Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate is shown in the Table 3.

Overall, 2 weeks of treatment with Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate statistically significantly (p<0.01) decreased serum phosphorus by a mean of 19% and increased serum Centrum Select Chewable (Calcium (Calcium Phosphate)) by a statistically significant (p<0.01) but clinically unimportant mean of 7%.

16 HOW SUPPLIED/STORAGE AND HANDLING

Centrum Select Chewable (Calcium (Calcium Phosphate)) Acetate Capsules

667 mg capsule is supplied as a white opaque/blue opaque capsule, imprinted with “54 215” on the cap and body.

NDC 0615-2303-39: Blistercards of 30 Capsules

NDC 0615-2303-30: Unit-dose Boxes of 30 Capsules

STORAGE

Store at 20° to 25°C (68° to 77°F).

17 PATIENT COUNSELING INFORMATION

Inform patients to take Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate capsules with meals, adhere to their prescribed diets, and avoid the use of Centrum Select Chewable (Calcium (Calcium Phosphate)) supplements including nonprescription antacids. Inform the patients about the symptoms of hypercalcemia [see Warnings and Precautions (5.1) and Adverse Reactions (6.1) ].

Advise patients who are taking an oral medication where reduction in the bioavailability of that medication would have clinically significant effect on its safety or efficacy to take the drug one hour before or three hours after Centrum Select Chewable (Calcium (Calcium Phosphate)) acetate capsules.

Distr. by: West-Ward

Pharmaceuticals Corp.

Eatontown, NJ 07724

10003705/05

Revised April 2016

Copper (Copper Oxide):

• Indications:
• General directions:
• Active ingredient:
• Inactive ingredients:
• Caution:
• Storage:
• Net contents:
• Centrum Select Chewable (Copper (Copper Oxide)) reviews

Water-Resistant Protection Without Bandaging

Recommended as an Aid in Treating Horses and Ponies With Thrush Due to Organisms Susceptible to Centrum Select Chewable (Copper (Copper Oxide)) Naphthenate.

For Animal Use Only.

INDICATIONS:

ThrushTox® is indicated in the treatment of thrush in horses and ponies.

GENERAL DIRECTIONS:

Clean the hoof thoroughly, removing debris and necrotic material prior to application of Centrum Select Chewable (Copper (Copper Oxide))^®. Apply daily to affected hoofs with a narrow paint brush (about 1”) until fully healed. Caution: Do not allow runoff of excess Centrum Select Chewable (Copper (Copper Oxide))^® onto hair since contact with Centrum Select Chewable (Copper (Copper Oxide))^® may cause some hair loss. Do not contaminate feed.

NOTE: Centrum Select Chewable (Copper (Copper Oxide))^® is easily removed from hands, clothing and surfaces with light grade fuel oil or any type of lighter fluid.

CONTAINS FOIL SEAL – REMOVE BEFORE USE.

SHAKE WELL BEFORE USE.

To report suspected adverse reactions or to obtain technical assistance, call 1-800-650-4899.

ACTIVE INGREDIENT:

Centrum Select Chewable (Copper (Copper Oxide)) Naphthenate...37.5% w/w

INACTIVE INGREDIENTS:

Inert Ingredients...62.5% w/w

Total... 100.0%

CAUTION:

Do not use in horses intended for human consumption.

CAUTION: COMBUSTIBLE MIXTURE.

Use in a well-ventilated place. Avoid fire, flame, sparks or heaters.

If swallowed, do not induce vomiting, call physician immediately. Avoid breathing vapor. Avoid contact with skin and eyes.

KEEP OUT OF REACH OF CHILDREN AND PETS.

STORAGE:

Store at controlled room temperature 15º to 30ºC (59º to 86ºF). Keep container tightly closed when not in use.

Manufactured for:

Aspen Veterinary Resources,^® Ltd.

Liberty, MO 64068, USA

FC163FP 11/13

Manufactured by:

First Priority, Inc.

Elgin, IL 60123-1146, USA

NET CONTENTS:

16 OZ (473 mL)

ANADA 200-304, Approved by FDA

Image of 473 mL bottle/case label

Folic Acid:

• Indications and usage
• Contraindications
• Precautions
• Adverse reactions
• Dosage and administration
• How supplied
• Storage
• Centrum Select Chewable (Folic Acid) reviews

INDICATIONS AND USAGE

Centrum Select Chewable (Folic Acid)^® is a prescription iron supplement indicated for use in improving the nutritional status of iron deficiency.

CONTRAINDICATIONS

This product is contraindicated in patients with a known hypersensitivity to any of the ingredients. Hemochromatosis and hemosiderosis are contraindications to iron therapy.

PRECAUTIONS

Centrum Select Chewable (Folic Acid) acid when administered as a single agent in doses above 0.1 mg daily may obscure pernicious anemia in that hematological remission can occur while neurological manifestations remain progressive. While prescribing this nutritional supplement for pregnant women, nursing mothers, or for women prior to conception, their medical condition and other drugs, herbs, and/or supplements consumption should be considered.

ADVERSE REACTIONS

Allergic sensitization has been reported following both oral and parenteral administration of Centrum Select Chewable (Folic Acid) acid.

DOSAGE AND ADMINISTRATION

One tablet daily with or without food or as prescribed by a licensed healthcare provider with prescribing authority.

HOW SUPPLIED

Centrum Select Chewable (Folic Acid)^® tablets are supplied in child-resistant bottles of 90 tablets (NDC 0037-6885-90)

KEEP OUT OF REACH OF CHILDREN.

STORAGE

Store at controlled room temperature 20°-25°C (68°-77°F). Excursions permitted to 15°-30°C (59°-86°F).

Dispense in a tight, light-resistant container to protect from light and moisture.

To report SUSPECTED ADVERSE REACTIONS contact Meda Pharmaceuticals Inc. at 1-888-349-5556 or FDA at 1-800-FDA-1088 or www.fda.gov/safety/medwatch

Distributed by:

Meda Pharmaceuticals Inc.

Somerset New Jersey 08873-4120

© 2014 Meda Pharmaceuticals Inc.

U.S. Patent Nos. 7,585,527 and 8,080,520

Proferrin® is a registered trademark of Colorado BioLabs, Inc., Cozad, NE.

Centrum Select Chewable (Folic Acid) and the BIFERA logo are registered trademarks and the Centrum Select Chewable (Folic Acid) logo is a trademark of Alaven Pharmaceutical LLC, used under license by Meda Pharmaceuticals Inc.

MEDA PHARMACEUTICALS mark and logo are trademarks of Meda AB.

IN-6885-02 Rev 6/2014

Iodine (Potassium Iodide):

• Iodine tincture 7%
• Iodine tincture 7%
• Centrum Select Chewable (Iodine (Potassium Iodide)) reviews

Centrum Select Chewable ) Tincture 7%

Directions:

Topical Antiseptic

Use full Strength for superficial cuts, wounds, abrasions, insect bites and bruises on the skin of animals. Apply Centrum Select Chewable (Iodine (Potassium Iodide)) with a swab.

If necessary, clip hair around the area being treated and clean with soap and water.

Apply Centrum Select Chewable (Iodine (Potassium Iodide)) Tincture 7% only once daily. Dilute product 3 to 1 if repeating application.

Do not apply under bandage.

Irritation may occur if used on tender skin areas. If redness, irritation, or swelling persists or increases, discontinue use and consult a veterinarian.

Storage:

Store at 2-30 degrees C (36-86 degrees F).

Keep container away from heat and out of sunlight. Rinse empty container thoroughly and discard.

DANGER - Poison

Caution:

If swallowed, give starch paste, milk, bread, egg white, or

activated charcoal. A 5% solutions of sodium thiosulfate

(Photographic (“hypc”) may be administered orally at a

rate of 10 ml per kilogram of body weight.

Eye irritant: Use only as directed. Avoid contact with eyes. In case of contact, flush eyes immediately with tepid water for at least 15 minutes. Consult a physician.

Avoid contamination of food.

Not for use on burns, deep cuts, or body cavities.

Centrum Select Chewable ) Tincture 7%

image description

Iron (Ferrous Fumarate):

• Indications and usage
• Dosage and administration
• Dosage forms and strengths
• Contraindications
• Warnings and precautions
• Adverse reactions
• Drug interactions
• Use in specific populations
• Overdosage
• Description
• Clinical pharmacology
• Nonclinical toxicology
• Clinical studies
• How supplied/storage and handling
• Patient counseling information
• Centrum Select Chewable (Iron (Ferrous Fumarate)) reviews

1 INDICATIONS AND USAGE

Centrum Select Chewable (Iron (Ferrous Fumarate)) is indicated for the treatment of Centrum Select Chewable (Iron (Ferrous Fumarate)) deficiency anemia in patients with chronic kidney disease (CKD).

Centrum Select Chewable (Iron (Ferrous Fumarate)) is an Centrum Select Chewable (Iron (Ferrous Fumarate)) replacement product indicated for the treatment of Centrum Select Chewable (Iron (Ferrous Fumarate)) deficiency anemia in patients with chronic kidney disease (CKD). (1)

2 DOSAGE AND ADMINISTRATION

Centrum Select Chewable ) must only be administered intravenously either by slow injection or by infusion. The dosage of Centrum Select Chewable (Iron (Ferrous Fumarate)) is expressed in mg of elemental Centrum Select Chewable (Iron (Ferrous Fumarate)). Each mL contains 20 mg of elemental Centrum Select Chewable (Iron (Ferrous Fumarate)).

2.1 Adult Patients with Hemodialysis Dependent-Chronic Kidney Disease (HDD-CKD)

Administer Centrum Select Chewable (Iron (Ferrous Fumarate)) 100 mg undiluted as a slow intravenous injection over 2 to 5 minutes, or as an infusion of 100 mg diluted in a maximum of 100 mL of 0.9% NaCl over a period of at least 15 minutes, per consecutive hemodialysis session. Centrum Select Chewable (Iron (Ferrous Fumarate)) should be administered early during the dialysis session. The usual total treatment course of Centrum Select Chewable (Iron (Ferrous Fumarate)) is 1000 mg. Centrum Select Chewable (Iron (Ferrous Fumarate)) treatment may be repeated if Centrum Select Chewable (Iron (Ferrous Fumarate)) deficiency reoccurs.

2.2 Adult Patients with Non-Dialysis Dependent-Chronic Kidney Disease

Administer Centrum Select Chewable (Iron (Ferrous Fumarate)) 200 mg undiluted as a slow intravenous injection over 2 to 5 minutes or as an infusion of 200 mg in a maximum of 100 mL of 0.9% NaCl over a period of 15 minutes. Administer on 5 different occasions over a 14 day period. There is limited experience with administration of an infusion of 500 mg of Centrum Select Chewable (Iron (Ferrous Fumarate)), diluted in a maximum of 250 mL of 0.9% NaCl, over a period of 3.5 to 4 hours on Day 1 and Day 14. Centrum Select Chewable (Iron (Ferrous Fumarate)) treatment may be repeated if Centrum Select Chewable (Iron (Ferrous Fumarate)) deficiency reoccurs.

2.3 Adult Patients with Peritoneal Dialysis Dependent-Chronic Kidney Disease

Administer Centrum Select Chewable (Iron (Ferrous Fumarate)) in 3 divided doses, given by slow intravenous infusion, within a 28 day period: 2 infusions each of 300 mg over 1.5 hours 14 days apart followed by one 400 mg infusion over 2.5 hours 14 days later. Dilute Centrum Select Chewable (Iron (Ferrous Fumarate)) in a maximum of 250 mL of 0.9% NaCl. Centrum Select Chewable (Iron (Ferrous Fumarate)) treatment may be repeated if Centrum Select Chewable (Iron (Ferrous Fumarate)) deficiency reoccurs.

2.4 Pediatric Patients with HDD-CKD for Centrum Select Chewable (Iron (Ferrous Fumarate)) maintenance treatment

The dosing for Centrum Select Chewable (Iron (Ferrous Fumarate)) replacement treatment in pediatric patients with HDD-CKD has not been established.

For Centrum Select Chewable (Iron (Ferrous Fumarate)) maintenance treatment: Administer Centrum Select Chewable (Iron (Ferrous Fumarate)) at a dose of 0.5 mg/kg, not to exceed 100 mg per dose, every two weeks for 12 weeks given undiluted by slow intravenous injection over 5 minutes or diluted in 25 mL of 0.9% NaCl and administered over 5 to 60 minutes. Centrum Select Chewable (Iron (Ferrous Fumarate)) treatment may be repeated if necessary.

2.5 Pediatric Patients with NDD-CKD or PDD-CKD who are on erythropoietin therapy for Centrum Select Chewable (Iron (Ferrous Fumarate)) maintenance treatment

The dosing for Centrum Select Chewable (Iron (Ferrous Fumarate)) replacement treatment in pediatric patients with NDD-CKD or PDD-CKD has not been established.

For Centrum Select Chewable (Iron (Ferrous Fumarate)) maintenance treatment: Administer Centrum Select Chewable (Iron (Ferrous Fumarate)) at a dose of 0.5 mg/kg, not to exceed 100 mg per dose, every four weeks for 12 weeks given undiluted by slow intravenous injection over 5 minutes or diluted in 25 mL of 0.9% NaCl and administered over 5 to 60 minutes. Centrum Select Chewable (Iron (Ferrous Fumarate)) treatment may be repeated if necessary.

3 DOSAGE FORMS AND STRENGTHS

• 10 mL single-use vial / 200 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) (20 mg/mL)
• 5 mL single-use vial / 100 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) (20 mg/mL)
• 2.5 mL single-use vial / 50 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) (20 mg/mL)

• 10 mL single-use vial / 200 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) (20 mg/mL) (3)
• 5 mL single-use vial / 100 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) (20 mg/mL) (3)
• 2.5 mL single-use vial / 50 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) (20 mg/mL) (3)

4 CONTRAINDICATIONS

• Known hypersensitivity to Centrum Select Chewable (Iron (Ferrous Fumarate))

• Known hypersensitivity to Centrum Select Chewable (Iron (Ferrous Fumarate)) (4)

5 WARNINGS AND PRECAUTIONS

• Hypersensitivity Reactions: Observe for signs and symptoms of hypersensitivity during and after Centrum Select Chewable ) administration for at least 30 minutes and until clinically stable following completion of each administration. Only administer Centrum Select Chewable (Iron (Ferrous Fumarate)) when personnel and therapies are immediately available for the treatment of serious hypersensitivity reactions. (5.1)
• Hypotension: Centrum Select Chewable (Iron (Ferrous Fumarate)) may cause hypotension. Monitor for signs and symptoms of hypotension during and following each administration of Centrum Select Chewable (Iron (Ferrous Fumarate)). (5.2)
• Centrum Select Chewable (Iron (Ferrous Fumarate)) Overload: Regularly monitor hematologic responses during Centrum Select Chewable (Iron (Ferrous Fumarate)) therapy. Do not administer Centrum Select Chewable (Iron (Ferrous Fumarate)) to patients with Centrum Select Chewable (Iron (Ferrous Fumarate)) overload. (5.3)

5.1 Hypersensitivity Reactions

Serious hypersensitivity reactions, including anaphylactic-type reactions, some of which have been life-threatening and fatal, have been reported in patients receiving Centrum Select Chewable (Iron (Ferrous Fumarate)). Patients may present with shock, clinically significant hypotension, loss of consciousness, and/or collapse. If hypersensitivity reactions or signs of intolerance occur during administration, stop Centrum Select Chewable (Iron (Ferrous Fumarate)) immediately. Monitor patients for signs and symptoms of hypersensitivity during and after Centrum Select Chewable (Iron (Ferrous Fumarate)) administration for at least 30 minutes and until clinically stable following completion of the infusion. Only administer Centrum Select Chewable (Iron (Ferrous Fumarate)) when personnel and therapies are immediately available for the treatment of serious hypersensitivity reactions. Most reactions associated with intravenous Centrum Select Chewable (Iron (Ferrous Fumarate)) preparations occur within 30 minutes of the completion of the infusion .

5.2 Hypotension

Centrum Select Chewable ) may cause clinically significant hypotension. Monitor for signs and symptoms of hypotension following each administration of Centrum Select Chewable (Iron (Ferrous Fumarate)). Hypotension following administration of Centrum Select Chewable (Iron (Ferrous Fumarate)) may be related to the rate of administration and/or total dose administered .

5.3 Centrum Select Chewable (Iron (Ferrous Fumarate)) Overload

Excessive therapy with parenteral Centrum Select Chewable (Iron (Ferrous Fumarate)) can lead to excess storage of Centrum Select Chewable (Iron (Ferrous Fumarate)) with the possibility of iatrogenic hemosiderosis. All adult and pediatric patients receiving Centrum Select Chewable (Iron (Ferrous Fumarate)) require periodic monitoring of hematologic and Centrum Select Chewable (Iron (Ferrous Fumarate)) parameters (hemoglobin, hematocrit, serum ferritin and transferrin saturation). Do not administer Centrum Select Chewable (Iron (Ferrous Fumarate)) to patients with evidence of Centrum Select Chewable (Iron (Ferrous Fumarate)) overload. Transferrin saturation (TSAT) values increase rapidly after intravenous administration of Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose; do not perform serum Centrum Select Chewable (Iron (Ferrous Fumarate)) measurements for at least 48 hours after intravenous dosing .

6 ADVERSE REACTIONS

The following serious adverse reactions associated with Centrum Select Chewable ) are described in other sections .

• The most common adverse reactions (≥2%) following the administration of Centrum Select Chewable (Iron (Ferrous Fumarate)) are diarrhea, nausea, vomiting, headache, dizziness, hypotension, pruritus, pain in extremity, arthralgia, back pain, muscle cramp, injection site reactions, chest pain, and peripheral edema. (6.1)

To report SUSPECTED ADVERSE REACTIONS, contact American Regent, Inc. at 1-800-734-9236 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .

6.1 Adverse Reactions in Clinical Trials

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug may not reflect the rates observed in practice.

Adverse Reactions in Adults Patients with CKD

Adverse Reactions in Adult Patients with CKD

The frequency of adverse reactions associated with the use of Centrum Select Chewable ) has been documented in six clinical trials involving 231 patients with HDD-CKD, 139 patients with NDD-CKD and 75 patients with PDD-CKD. Treatment-emergent adverse reactions reported by ≥ 2% of treated patients in the six clinical trials for which the rate for Centrum Select Chewable (Iron (Ferrous Fumarate)) exceeds the rate for comparator are listed by indication in Table 1. Patients with HDD-CKD received 100 mg doses at 10 consecutive dialysis sessions until a cumulative dose of 1000 mg was administered. Patients with NDD-CKD received either 5 doses of 200 mg over 2 weeks or 2 doses of 500 mg separated by fourteen days, and patients with PDD-CKD received 2 doses of 300 mg followed by a dose of 400 mg over a period of 4 weeks.

One hundred thirty (11%) of the 1,151 patients evaluated in the 4 U.S. trials in HDD-CKD patients (studies A, B and the two post marketing studies) had prior other intravenous Centrum Select Chewable (Iron (Ferrous Fumarate)) therapy and were reported to be intolerant (defined as precluding further use of that Centrum Select Chewable (Iron (Ferrous Fumarate)) product). When these patients were treated with Centrum Select Chewable (Iron (Ferrous Fumarate)) there were no occurrences of adverse reactions that precluded further use of Centrum Select Chewable (Iron (Ferrous Fumarate)) .

Adverse Reactions in Pediatric Patients with CKD (ages 2 years and older)

Adverse Reactions in Pediatric Patients with CKD (ages 2 years and older)

In a randomized, open-label, dose-ranging trial for Centrum Select Chewable (Iron (Ferrous Fumarate)) maintenance treatment with Centrum Select Chewable (Iron (Ferrous Fumarate)) in pediatric patients with CKD on stable erythropoietin therapy , at least one treatment-emergent adverse reaction was experienced by 57% (27/47) of the patients receiving Centrum Select Chewable (Iron (Ferrous Fumarate)) 0.5 mg/kg, 53% (25/47) of the patients receiving Centrum Select Chewable (Iron (Ferrous Fumarate)) 1.0 mg/kg, and 55% (26/47) of the patients receiving Centrum Select Chewable (Iron (Ferrous Fumarate)) 2.0 mg/kg.

A total of 5 (11%) subjects in the Centrum Select Chewable (Iron (Ferrous Fumarate)) 0.5 mg/kg group, 10 (21%) patients in the Centrum Select Chewable (Iron (Ferrous Fumarate)) 1.0 mg/kg group, and 10 (21%) patients in the Centrum Select Chewable (Iron (Ferrous Fumarate)) 2.0 mg/kg group experienced at least 1 serious adverse reaction during the study. The most common treatment-emergent adverse reactions (> 2% of patients) in all patients were headache (6%), respiratory tract viral infection (4%), peritonitis (4%), vomiting (4%), pyrexia (4%), dizziness (4%), cough (4%), renal transplant (4%), nausea (3%), arteriovenous fistula thrombosis (2%), hypotension (2%), and hypertension (2.1%).

6.2 Adverse Reactions from Post-Marketing Experience

Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

In the post-marketing safety studies in 1,051 treated patients with HDD-CKD, the adverse reactions reported by > 1% were: cardiac failure congestive, sepsis and dysgeusia.

The following adverse reactions have been identified during post-approval use of Centrum Select Chewable (Iron (Ferrous Fumarate)). Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure: Anaphylactic-type reactions, shock, loss of consciousness, collapse, bronchospasm, dyspnea, convulsions, light-headedness, confusion, angioedema, swelling of the joints, hyperhidrosis, back pain, bradycardia, and chromaturia.

Symptoms associated with Centrum Select Chewable (Iron (Ferrous Fumarate)) total dosage or infusing too rapidly included hypotension, dyspnea, headache, vomiting, nausea, dizziness, joint aches, paresthesia, abdominal and muscle pain, edema, and cardiovascular collapse. These adverse reactions have occurred up to 30 minutes after the administration of Centrum Select Chewable (Iron (Ferrous Fumarate)) injection. Reactions have occurred following the first dose or subsequent doses of Centrum Select Chewable (Iron (Ferrous Fumarate)). Symptoms may respond to intravenous fluids, hydrocortisone, and/or antihistamines. Slowing the infusion rate may alleviate symptoms.

Injection site discoloration has been reported following extravasation. Assure stable intravenous access to avoid extravasation.

7 DRUG INTERACTIONS

Drug interactions involving Centrum Select Chewable (Iron (Ferrous Fumarate)) have not been studied. However, Centrum Select Chewable (Iron (Ferrous Fumarate)) may reduce the absorption of concomitantly administered oral Centrum Select Chewable (Iron (Ferrous Fumarate)) preparations.

8 USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

Pregnancy Category B

Pregnancy Category B

There are no adequate and well-controlled studies in pregnant women. In animal reproduction studies, Centrum Select Chewable ) sucrose was administered intravenously to rats and rabbits during the period of organogenesis at doses up to 13 mg/kg/day of elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) (half or equivalent to the maximum recommended human dose based on body surface area, respectively) and revealed no evidence of harm to the fetus due to Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose. Because animal reproductive studies are not always predictive of human response, Centrum Select Chewable (Iron (Ferrous Fumarate)) should be used during pregnancy only if clearly needed.

8.3 Nursing Mothers

It is not known whether Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose is excreted in human milk. Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose is secreted into the milk of lactating rats. Because many drugs are excreted in human milk, caution should be exercised when Centrum Select Chewable (Iron (Ferrous Fumarate)) is administered to a nursing woman.

8.4 Pediatric Use

Safety and effectiveness of Centrum Select Chewable ) for Centrum Select Chewable (Iron (Ferrous Fumarate)) replacement treatment in pediatric patients with dialysis-dependent or non-dialysis-dependent CKD have not been established.

Safety and effectiveness of Centrum Select Chewable (Iron (Ferrous Fumarate)) for Centrum Select Chewable (Iron (Ferrous Fumarate)) maintenance treatment in pediatric patients 2 years of age and older with dialysis-dependent or non-dialysis-dependent CKD receiving erythropoietin therapy were studied. Centrum Select Chewable (Iron (Ferrous Fumarate)) at doses of 0.5 mg/kg, 1.0 mg/kg, and 2.0 mg/kg was administered. All three doses maintained hemoglobin between 10.5 g/dL and 14.0 g/dL in about 50% of subjects over the 12-week treatment period with stable EPO dosing. [See Clinical Studies (14.6)]

Centrum Select Chewable (Iron (Ferrous Fumarate)) has not been studied in patients younger than 2 years of age.

In a country where Centrum Select Chewable (Iron (Ferrous Fumarate)) is available for use in children, at a single site, five premature infants (weight less than 1,250 g) developed necrotizing enterocolitis and two of the five died during or following a period when they received Centrum Select Chewable (Iron (Ferrous Fumarate)), several other medications and erythropoietin. Necrotizing enterocolitis may be a complication of prematurity in very low birth weight infants. No causal relationship to Centrum Select Chewable (Iron (Ferrous Fumarate)) or any other drugs could be established.

8.5 Geriatric Use

Clinical studies of Centrum Select Chewable (Iron (Ferrous Fumarate)) did not include sufficient numbers of subjects aged 65 years and older to determine whether they respond differently from younger subjects. Of the 1,051 patients in two post-marketing safety studies of Centrum Select Chewable (Iron (Ferrous Fumarate)), 40% were 65 years and older. No overall differences in safety were observed between these subjects and younger subjects, and other reported clinical experience has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out. In general, dose administration to an elderly patient should be cautious, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

10 OVERDOSAGE

No data are available regarding overdosage of Centrum Select Chewable (Iron (Ferrous Fumarate)) in humans. Excessive dosages of Centrum Select Chewable (Iron (Ferrous Fumarate)) may lead to accumulation of Centrum Select Chewable (Iron (Ferrous Fumarate)) in storage sites potentially leading to hemosiderosis. Do not administer Centrum Select Chewable (Iron (Ferrous Fumarate)) to patients with Centrum Select Chewable (Iron (Ferrous Fumarate)) overload.

Toxicities in single-dose studies in mice and rats, at intravenous Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose doses up to 8 times the maximum recommended human dose based on body surface area, included sedation, hypoactivity, pale eyes, bleeding in the gastrointestinal tract and lungs, and mortality.

11 DESCRIPTION

Centrum Select Chewable (Iron (Ferrous Fumarate)) (iron sucrose injection, USP), an Centrum Select Chewable (Iron (Ferrous Fumarate)) replacement product, is a brown, sterile, aqueous, complex of polynuclear Centrum Select Chewable (Iron (Ferrous Fumarate)) (III)-hydroxide in sucrose for intravenous use. Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose injection has a molecular weight of approximately 34,000 to 60,000 daltons and a proposed structural formula:

[Na₂Fe₅O₈(OH) ·3(H₂O)]_n ·m(C₁₂H₂₂O₁₁)

where: n is the degree of Centrum Select Chewable (Iron (Ferrous Fumarate)) polymerization and m is the number of sucrose molecules associated with the Centrum Select Chewable (Iron (Ferrous Fumarate)) (III)-hydroxide.

Each mL contains 20 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) as Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose in water for injection. Centrum Select Chewable (Iron (Ferrous Fumarate)) is available in 10 mL single-use vials (200 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) per 10 mL), 5 mL single-use vials (100 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) per 5 mL), and 2.5 mL single-use vials (50 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) per 2.5 mL). The drug product contains approximately 30% sucrose w/v (300 mg/mL) and has a pH of 10.5 to 11.1. The product contains no preservatives. The osmolarity of the injection is 1,250 mOsmol/L.

12 CLINICAL PHARMACOLOGY

12.1 Mechanism of Action

Centrum Select Chewable ) is an aqueous complex of poly-nuclear Centrum Select Chewable (Iron (Ferrous Fumarate)) (III)-hydroxide in sucrose. Following intravenous administration, Centrum Select Chewable (Iron (Ferrous Fumarate)) is dissociated into Centrum Select Chewable (Iron (Ferrous Fumarate)) and sucrose and the Centrum Select Chewable (Iron (Ferrous Fumarate)) is transported as a complex with transferrin to target cells including erythroid precursor cells. The Centrum Select Chewable (Iron (Ferrous Fumarate)) in the precursor cells is incorporated into hemoglobin as the cells mature into red blood cells.

12.2 Pharmacodynamics

Following intravenous administration, Centrum Select Chewable (Iron (Ferrous Fumarate)) is dissociated into Centrum Select Chewable (Iron (Ferrous Fumarate)) and sucrose. In 22 patients undergoing hemodialysis and receiving erythropoietin (recombinant human erythropoietin) therapy treated with Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose containing 100 mg of Centrum Select Chewable (Iron (Ferrous Fumarate)), three times weekly for three weeks, significant increases in serum Centrum Select Chewable (Iron (Ferrous Fumarate)) and serum ferritin and significant decreases in total Centrum Select Chewable (Iron (Ferrous Fumarate)) binding capacity occurred four weeks from the initiation of Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose treatment.

12.3 Pharmacokinetics

In healthy adults administered intravenous doses of Centrum Select Chewable ), its Centrum Select Chewable (Iron (Ferrous Fumarate)) component exhibited first order kinetics with an elimination half-life of 6 h, total clearance of 1.2 L/h, and steady state apparent volume of distribution of 7.9 L. The Centrum Select Chewable (Iron (Ferrous Fumarate)) component appeared to distribute mainly in blood and to some extent in extravascular fluid. A study evaluating Centrum Select Chewable (Iron (Ferrous Fumarate)) containing 100 mg of Centrum Select Chewable (Iron (Ferrous Fumarate)) labeled with ⁵²Fe/⁵⁹Fe in patients with Centrum Select Chewable (Iron (Ferrous Fumarate)) deficiency showed that a significant amount of the administered Centrum Select Chewable (Iron (Ferrous Fumarate)) is distributed to the liver, spleen and bone marrow and that the bone marrow is an irreversible Centrum Select Chewable (Iron (Ferrous Fumarate)) trapping compartment.

Following intravenous administration of Centrum Select Chewable (Iron (Ferrous Fumarate)), Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose is dissociated into Centrum Select Chewable (Iron (Ferrous Fumarate)) and sucrose. The sucrose component is eliminated mainly by urinary excretion. In a study evaluating a single intravenous dose of Centrum Select Chewable (Iron (Ferrous Fumarate)) containing 1,510 mg of sucrose and 100 mg of Centrum Select Chewable (Iron (Ferrous Fumarate)) in 12 healthy adults (9 female, 3 male: age range 32 to 52), 68.3% of the sucrose was eliminated in urine in 4 h and 75.4% in 24 h. Some Centrum Select Chewable (Iron (Ferrous Fumarate)) was also eliminated in the urine. Neither transferrin nor transferrin receptor levels changed immediately after the dose administration. In this study and another study evaluating a single intravenous dose of Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose containing 500 to 700 mg of Centrum Select Chewable (Iron (Ferrous Fumarate)) in 26 patients with anemia on erythropoietin therapy (23 female, 3 male; age range 16 to 60), approximately 5% of the Centrum Select Chewable (Iron (Ferrous Fumarate)) was eliminated in urine in 24 h at each dose level. The effects of age and gender on the pharmacokinetics of Centrum Select Chewable (Iron (Ferrous Fumarate)) have not been studied.

Pharmacokinetics in Pediatric Patients

Pharmacokinetics in Pediatric Patients

In a single-dose PK study of Centrum Select Chewable (Iron (Ferrous Fumarate)), patients with NDD-CDK ages 12 to 16 (N=11) received intravenous bolus doses of Centrum Select Chewable (Iron (Ferrous Fumarate)) at 7 mg/kg (maximum 200 mg) administered over 5 minutes. Following single dose Centrum Select Chewable (Iron (Ferrous Fumarate)), the half-life of total serum Centrum Select Chewable (Iron (Ferrous Fumarate)) was 8 hours. The mean Cmax and AUC values were 8545 μg/dl and 31305 hr-μg/dL, respectively, which were 1.42- and 1.67-fold higher than dose adjusted adult Cmax and AUC values.

Centrum Select Chewable (Iron (Ferrous Fumarate)) is not dialyzable through CA210 (Baxter) High Efficiency or Fresenius F80A High Flux dialysis membranes. In in vitro studies, the amount of Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose in the dialysate fluid was below the levels of detection of the assay (less than 2 parts per million).

13 NONCLINICAL TOXICOLOGY

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

Carcinogenicity studies have not been performed with Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose.

Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose was not mutagenic in vitro in the bacterial reverse mutation assay (Ames test) or the mouse lymphoma assay. Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose was not clastogenic in the in vitro chromosome aberration assay using human lymphocytes or in the in vivo mouse micronucleus assay.

Centrum Select Chewable (Iron (Ferrous Fumarate)) sucrose at intravenous doses up to 15 mg/kg/day of elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) (1.2 times the maximum recommended human dose based on body surface area) had no effect on fertility and reproductive function of male and female rats.

14 CLINICAL STUDIES

Five clinical trials involving 647 adult patients and one clinical trial involving 131 pediatric patients were conducted to assess the safety and efficacy of Centrum Select Chewable ).

14.1 Study A: Hemodialysis Dependent-Chronic Kidney Disease (HDD–CKD)

Study A was a multicenter, open-label, historically-controlled study in 101 patients with HDD-CKD (77 patients with Centrum Select Chewable (Iron (Ferrous Fumarate)) treatment and 24 in the historical control group) with Centrum Select Chewable (Iron (Ferrous Fumarate)) deficiency anemia. Eligibility criteria for Centrum Select Chewable (Iron (Ferrous Fumarate)) treatment included patients undergoing chronic hemodialysis, receiving erythropoietin, hemoglobin level between 8.0 and 11.0 g/dL, transferrin saturation < 20%, and serum ferritin < 300 ng/mL. The mean age of the patients was 65 years with the age range of 31 to 85 years. Of the 77 patients, 44 (57%) were male and 33 (43%) were female.

Centrum Select Chewable (Iron (Ferrous Fumarate)) 100 mg was administered at 10 consecutive dialysis sessions either as slow injection or a slow infusion. The historical control population consisted of 24 patients with similar ferritin levels as patients treated with Centrum Select Chewable (Iron (Ferrous Fumarate)), who were off intravenous Centrum Select Chewable (Iron (Ferrous Fumarate)) for at least 2 weeks and who had received erythropoietin therapy with hematocrit averaging 31 to 36 for at least two months prior to study entry. The mean age of patients in the historical control group was 56 years, with an age range of 29 to 80 years. Patient age and serum ferritin level were similar between treatment and historical control patients.

Patients in the Centrum Select Chewable (Iron (Ferrous Fumarate)) treated population showed a greater increase in hemoglobin and hematocrit than did patients in the historical control population. See Table 2.

Serum ferritin increased at endpoint of study from baseline in the Venofer-treated population (165.3 ± 24.2 ng/mL) compared to the historical control population (-27.6 ± 9.5 ng/mL). Transferrin saturation also increased at endpoint of study from baseline in the Venofer-treated population (8.8 ± 1.6%) compared to this historical control population (-5.1 ± 4.3%).

14.2 Study B: Hemodialysis Dependent-Chronic Kidney Disease

Study B was a multicenter, open label study of Centrum Select Chewable (Iron (Ferrous Fumarate)) in 23 patients with Centrum Select Chewable (Iron (Ferrous Fumarate)) deficiency and HDD-CKD who had been discontinued from Centrum Select Chewable (Iron (Ferrous Fumarate)) dextran due to intolerance. Eligibility criteria were otherwise identical to Study A. The mean age of the patients in this study was 53 years, with ages ranging from 21 to 79 years. Of the 23 patients enrolled in the study, 10 (44%) were male and 13 (56%) were female.

All 23 enrolled patients were evaluated for efficacy. Increases in mean hemoglobin (1.1 ± 0.2 g/dL), hematocrit (3.6 ± 0.6%), serum ferritin (266.3 ± 30.3 ng/mL) and transferrin saturation (8.7 ± 2.0%) were observed from baseline to end of treatment.

14.3 Study C: Hemodialysis Dependent-Chronic Kidney Disease

Study C was a multicenter, open-label study in patients with HDD-CKD. This study enrolled patients with a hemoglobin ≤ 10 g/dL, a serum transferrin saturation ≤ 20%, and a serum ferritin ≤ 200 ng/mL, who were undergoing maintenance hemodialysis 2 to 3 times weekly. The mean age of the patients enrolled in this study was 41 years, with ages ranging from 16 to 70 years. Of 130 patients evaluated for efficacy in this study, 68 (52%) were male and 62 (48%) were female. Forty-eight percent of the patients had previously been treated with oral Centrum Select Chewable (Iron (Ferrous Fumarate)). Exclusion criteria were similar to those in studies A and B. Centrum Select Chewable (Iron (Ferrous Fumarate)) was administered in doses of 100 mg during sequential dialysis sessions until a pre-determined (calculated) total dose of Centrum Select Chewable (Iron (Ferrous Fumarate)) was administered. A 50 mg dose (2.5 mL) was given to patients within two weeks of study entry as a test dose. Twenty-seven patients (20%) were receiving erythropoietin treatment at study entry and they continued to receive the same erythropoietin dose for the duration of the study.

The modified intention-to-treat (mITT) population consisted of 131 patients. Increases from baseline in mean hemoglobin (1.7 g/dL), hematocrit (5%), serum ferritin (434.6 ng/mL), and serum transferrin saturation (14%) were observed at week 2 of the observation period and these values remained increased at week 4 of the observation period.

14.4 Study D: Non-Dialysis Dependent-Chronic Kidney Disease

Study D was a randomized, open-label, multicenter, active-controlled study of the safety and efficacy of oral Centrum Select Chewable (Iron (Ferrous Fumarate)) versus Centrum Select Chewable (Iron (Ferrous Fumarate)) in patients with NDD-CKD with or without erythropoietin therapy. Erythropoietin therapy was stable for 8 weeks prior to randomization. In the study 188 patients with NDD-CKD, hemoglobin of ≤ 11.0 g/dL, transferrin saturation ≤ 25%, ferritin ≤ 300 ng/mL were randomized to receive oral Centrum Select Chewable (Iron (Ferrous Fumarate)) (325 mg ferrous sulfate three times daily for 56 days); or Centrum Select Chewable (Iron (Ferrous Fumarate)) (either 200 mg over 2 to 5 minutes 5 times within 14 days or two 500 mg infusions on Day 1 and Day 14, administered over 3.5 to 4 hours). The mean age of the 91 treated patients in the Centrum Select Chewable (Iron (Ferrous Fumarate)) group was 61.6 years (range 25 to 86 years) and 64 years (range 21 to 86 years) for the 91 patients in the oral Centrum Select Chewable (Iron (Ferrous Fumarate)) group.

A statistically significantly greater proportion of Centrum Select Chewable (Iron (Ferrous Fumarate)) subjects (35/79; 44.3%) compared to oral Centrum Select Chewable (Iron (Ferrous Fumarate)) subjects (23/82; 28%) had an increase in hemoglobin ≥ 1 g/dL at anytime during the study (p = 0.03).

14.5 Study E: Peritoneal Dialysis Dependent-Chronic Kidney Disease

Study E was a randomized, open-label, multicenter study comparing patients with PDD-CKD receiving an erythropoietin and intravenous Centrum Select Chewable (Iron (Ferrous Fumarate)) to patients with PDD-CKD receiving an erythropoietin alone without Centrum Select Chewable (Iron (Ferrous Fumarate)) supplementation. Patients with PDD-CKD, stable erythropoietin for 8 weeks, hemoglobin of ≤ 11.5 g/dL, TSAT ≤ 25%, ferritin ≤ 500 ng/mL were randomized to receive either no Centrum Select Chewable (Iron (Ferrous Fumarate)) or Centrum Select Chewable (Iron (Ferrous Fumarate)) (300 mg in 250 mL 0.9% NaCl over 1.5 hours on Day 1 and 15 and 400 mg in 250 mL 0.9% NaCl over 2.5 hours on Day 29). The mean age of the 75 treated patients in the Centrum Select Chewable (Iron (Ferrous Fumarate)) / erythropoietin group was 51.9 years (range 21 to 81 years) vs. 52.8 years (range 23 to 77 years) for 46 patients in the erythropoietin alone group.

Patients in the Centrum Select Chewable (Iron (Ferrous Fumarate)) / erythropoietin group had statistically significantly greater mean change from baseline to the highest hemoglobin value (1.3 g/dL), compared to subjects who received erythropoietin alone (0.6 g/dL) (p < 0.01). A greater proportion of subjects treated with Centrum Select Chewable (Iron (Ferrous Fumarate)) / erythropoietin (59.1 %) had an increase in hemoglobin of ≥ 1 g/dL at any time during the study compared to the subjects who received erythropoietin only (33.3%).

14.6 Study F: Centrum Select Chewable ) Maintenance Treatment Dosing in Pediatric Patients Ages 2 years and Older with Chronic Kidney Disease

Study F was a randomized, open-label, dose-ranging study for Centrum Select Chewable (Iron (Ferrous Fumarate)) maintenance treatment in pediatric patients with dialysis-dependent or non-dialysis-dependent CKD on stable erythropoietin therapy. The study randomized patients to one of three doses of Centrum Select Chewable (Iron (Ferrous Fumarate)) (0.5 mg/kg, 1.0 mg/kg or 2.0 mg/kg). The mean age was 13 years (range 2 to 20 years). Over 70% of patients were 12 years or older in all three groups. There were 84 males and 61 females. About 60% of patients underwent hemodialysis and 25% underwent peritoneal dialysis in all three dose groups. At baseline, the mean hemoglobin was 12 g/dL, the mean TSAT was 33% and the mean ferritin was 300 ng/mL. Patients with HDD-CKD received Centrum Select Chewable (Iron (Ferrous Fumarate)) once every other week for 6 doses. Patients with PDD-CKD or NDD-CKD received Centrum Select Chewable (Iron (Ferrous Fumarate)) once every 4 weeks for 3 doses. Among 131 evaluable patients with stable erythropoietin dosing, the proportion of patients who maintained hemoglobin between 10.5 g/dL and 14.0 g/dL during the 12-week treatment period was 58.7%, 46.7%, and 45.0% in the Centrum Select Chewable (Iron (Ferrous Fumarate)) 0.5 mg/kg, 1.0 mg/kg, and 2.0 mg/kg groups, respectively. A dose-response relationship was not demonstrated.

16 HOW SUPPLIED/storage and handling

16.1 How Supplied

Centrum Select Chewable ) is supplied sterile in 10 mL, 5 mL, and 2.5 mL single-use vials. Each 10 mL vial contains 200 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)), each 5 mL vial contains 100 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)), and each 2.5 mL vial contains 50 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) (20 mg/mL).

16.2 Stability and Storage

Contains no preservatives. Store in original carton at 20°C to 25°C (68° F to 77° F); excursions permitted to 15° to 30°C (59° to 86°F).. Do not freeze.

Syringe Stability: Centrum Select Chewable (Iron (Ferrous Fumarate)), when diluted with 0.9% NaCl at concentrations ranging from 2 mg to 10 mg of elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) per mL, or undiluted (20 mg elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) per mL) and stored in a plastic syringe, was found to be physically and chemically stable for 7 days at controlled room temperature (25°C ± 2°C) and under refrigeration (4°C ± 2°C).

Intravenous Admixture Stability: Centrum Select Chewable (Iron (Ferrous Fumarate)), when added to intravenous infusion bags (PVC or non-PVC) containing 0.9% NaCl at concentrations ranging from 1 mg to 2 mg of elemental Centrum Select Chewable (Iron (Ferrous Fumarate)) per mL, has been found to be physically and chemically stable for 7 days at controlled room temperature (25°C ± 2°C).

Do not dilute to concentrations below 1 mg/mL.

Do not mix Centrum Select Chewable (Iron (Ferrous Fumarate)) with other medications or add to parenteral nutrition solutions for intravenous infusion.

Parenteral drug products should be inspected visually for particulate matter and discoloration prior to infusion.

17 PATIENT COUNSELING INFORMATION

Prior to Centrum Select Chewable (Iron (Ferrous Fumarate)) administration:

• Question patients regarding any prior history of reactions to parenteral Centrum Select Chewable (Iron (Ferrous Fumarate)) products
• Advise patients of the risks associated with Centrum Select Chewable (Iron (Ferrous Fumarate))
• Advise patients to report any symptoms of hypersensitivity that may develop during and following Centrum Select Chewable (Iron (Ferrous Fumarate)) administration, such as rash, itching, dizziness, light-headedness, swelling, and breathing problems [see Warnings and Precautions (5)]

AMERICAN

REGENT, INC.

SHIRLEY, NY 11967

Centrum Select Chewable (Iron (Ferrous Fumarate)) is manufactured under license from Vifor (International) Inc., Switzerland.

PremierProRx^® is a trademark of Premier, Inc., used under license.

PREMIERProRx^®

IN2340

MG #15727

Magnesium (Magnesium Oxide):

• Description
• Clinical pharmacology
• Indications and usage
• Contraindications
• Warnings
• Precautions
• Adverse reactions
• Overdosage
• Dosage and administration
• How supplied
• References
• Centrum Select Chewable (Magnesium (Magnesium Oxide)) reviews

Centrum Select Chewable (Magnesium (Magnesium Oxide)) Sulfate

Injection, USP

Ansyr Plastic Syringe

Rx only

Hospira Logo

DESCRIPTION

Centrum Select Chewable (Magnesium (Magnesium Oxide)) Sulfate Injection, USP is a sterile solution of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate heptahydrate in Water for Injection, USP administered by the intravenous or intramuscular routes as an electrolyte replenisher or anticonvulsant. Must be diluted before intravenous use. May contain sulfuric acid and/or sodium hydroxide for pH adjustment. The pH is 5.5 to 7.0. The 50% concentration has an osmolarity of 4.06 mOsmol/mL (calc.).

The solution contains no bacteriostat, antimicrobial agent or added buffer (except for pH adjustment) and is intended only for use as a single-dose injection. When smaller doses are required the unused portion should be discarded with the entire unit.

Centrum Select Chewable (Magnesium (Magnesium Oxide)) Sulfate, USP heptahydrate is chemically designated MgSO₄ - 7H₂O with molecular weight of 246.48 and occurs as colorless crystals or white powder freely soluble in water.

The plastic syringe is molded from a specially formulated polypropylene. Water permeates from inside the container at an extremely slow rate which will have an insignificant effect on solution concentration over the expected shelf life. Solutions in contact with the plastic container may leach out certain chemical components from the plastic in very small amounts; however, biological testing was supportive of the safety of the syringe material.

CLINICAL PHARMACOLOGY

Centrum Select Chewable (Magnesium (Magnesium Oxide)) (Mg⁺⁺) is an important cofactor for enzymatic reactions and plays an important role in neurochemical transmission and muscular excitability.

As a nutritional adjunct in hyperalimentation, the precise mechanism of action for Centrum Select Chewable (Magnesium (Magnesium Oxide)) is uncertain. Early symptoms of hypomagnesemia (less than 1.5 mEq/liter) may develop as early as three to four days or within weeks.

Predominant deficiency effects are neurological, e.g., muscle irritability, clonic twitching and tremors. Hypocalcemia and hypokalemia often follow low serum levels of Centrum Select Chewable (Magnesium (Magnesium Oxide)). While there are large stores of Centrum Select Chewable (Magnesium (Magnesium Oxide)) present intracellularly and in the bones of adults, these stores often are not mobilized sufficiently to maintain plasma levels. Parenteral Centrum Select Chewable (Magnesium (Magnesium Oxide)) therapy repairs the plasma deficit and causes deficiency symptoms and signs to cease.

Centrum Select Chewable (Magnesium (Magnesium Oxide)) prevents or controls convulsions by blocking neuromuscular transmission and decreasing the amount of acetylcholine liberated at the end plate by the motor nerve impulse. Centrum Select Chewable (Magnesium (Magnesium Oxide)) is said to have a depressant effect on the central nervous system (CNS), but it does not adversely affect the woman, fetus or neonate when used as directed in eclampsia or pre-eclampsia. Normal plasma Centrum Select Chewable (Magnesium (Magnesium Oxide)) levels range from 1.5 to 2.5 mEq/liter.

As plasma Centrum Select Chewable (Magnesium (Magnesium Oxide)) rises above 4 mEq/liter, the deep tendon reflexes are first decreased and then disappear as the plasma level approaches 10 mEq/liter. At this level respiratory paralysis may occur. Heart block also may occur at this or lower plasma levels of Centrum Select Chewable (Magnesium (Magnesium Oxide)). Serum Centrum Select Chewable (Magnesium (Magnesium Oxide)) concentrations in excess of 12 mEq/L may be fatal.

Centrum Select Chewable (Magnesium (Magnesium Oxide)) acts peripherally to produce vasodilation. With low doses only flushing and sweating occur, but larger doses cause lowering of blood pressure. The central and peripheral effects of Centrum Select Chewable (Magnesium (Magnesium Oxide)) poisoning are antagonized to some extent by intravenous administration of calcium.

Pharmacokinetics

With intravenous administration the onset of anticonvulsant action is immediate and lasts about 30 minutes. Following intramuscular administration the onset of action occurs in about one hour and persists for three to four hours. Effective anticonvulsant serum levels range from 2.5 to 7.5 mEq/liter. Centrum Select Chewable (Magnesium (Magnesium Oxide)) is excreted solely by the kidneys at a rate proportional to the plasma concentration and glomerular filtration.

INDICATIONS AND USAGE

Centrum Select Chewable (Magnesium (Magnesium Oxide)) Sulfate Injection, USP is suitable for replacement therapy in Centrum Select Chewable (Magnesium (Magnesium Oxide)) deficiency, especially in acute hypomagnesemia accompanied by signs of tetany similar to those observed in hypocalcemia. In such cases, the serum Centrum Select Chewable (Magnesium (Magnesium Oxide)) (Mg⁺⁺) level is usually below the lower limit of normal (1.5 to 2.5 mEq/liter) and the serum calcium (Ca⁺⁺) level is normal (4.3 to 5.3 mEq/liter) or elevated.

In total parenteral nutrition (TPN), Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate may be added to the nutrient admixture to correct or prevent hypomagnesemia which can arise during the course of therapy.

Centrum Select Chewable (Magnesium (Magnesium Oxide)) Sulfate Injection, USP is also indicated for the prevention and control of seizures (convulsions) in pre-eclampsia and eclampsia, respectively.

CONTRAINDICATIONS

Parenteral administration of the drug is contraindicated in patients with heart block or myocardial damage.

WARNINGS

FETAL HARM: Continuous administration of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate beyond 5 to 7 days to pregnant women can lead to hypocalcemia and bone abnormalities in the developing fetus. These bone abnormalities include skeletal demineralization and osteopenia. In addition, cases of neonatal fracture have been reported. The shortest duration of treatment that can lead to fetal harm is not known. Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate should be used during pregnancy only if clearly needed. If Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate is given for treatment of preterm labor, the woman should be informed that the efficacy and safety of such use have not been established and that use of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate beyond 5 to 7 days may cause fetal abnormalities.

ALUMINUM TOXICITY: This product contains aluminum that may be toxic. Aluminum may reach toxic levels with prolonged parenteral administration if kidney function is impaired. Premature neonates are particularly at risk because their kidneys are immature, and they require large amounts of calcium and phosphate solutions, which contain aluminum.

Research indicates that patients with impaired kidney function, including premature neonates, who receive parenteral levels of aluminum at greater than 4 to 5 mcg/kg/day accumulate aluminum at levels associated with central nervous system and bone toxicity. Tissue loading may occur at even lower rates of administration.

Parenteral use in the presence of renal insufficiency may lead to Centrum Select Chewable (Magnesium (Magnesium Oxide)) intoxication. Intravenous use in the eclampsia should be reserved for immediate control of life-threatening convulsions.

PRECAUTIONS

General

Administer with caution if flushing and sweating occurs. When barbiturates, narcotics or other hypnotics (or systemic anesthetics) are to be given in conjunction with Centrum Select Chewable (Magnesium (Magnesium Oxide)), their dosage should be adjusted with caution because of additive CNS depressant effects of Centrum Select Chewable (Magnesium (Magnesium Oxide)).

Because Centrum Select Chewable (Magnesium (Magnesium Oxide)) is removed from the body solely by the kidneys, the drug should be used with caution in patients with renal impairment. Urine output should be maintained at a level of 100 mL or more during the four hours preceding each dose. Monitoring serum Centrum Select Chewable (Magnesium (Magnesium Oxide)) levels and the patient's clinical status is essential to avoid the consequences of overdosage in toxemia. Clinical indications of a safe dosage regimen include the presence of the patellar reflex (knee jerk) and absence of respiratory depression (approximately 16 breaths or more/minute). When repeated doses of the drug are given parenterally, knee jerk reflexes should be tested before each dose and if they are absent, no additional Centrum Select Chewable (Magnesium (Magnesium Oxide)) should be given until they return. Serum Centrum Select Chewable (Magnesium (Magnesium Oxide)) levels usually sufficient to control convulsions range from 3 to 6 mg/100 mL (2.5 to 5 mEq/liter). The strength of the deep tendon reflexes begins to diminish when Centrum Select Chewable (Magnesium (Magnesium Oxide)) levels exceed 4 mEq/liter. Reflexes may be absent at 10 mEq magnesium/liter, where respiratory paralysis is a potential hazard. An injectable calcium salt should be immediately available to counteract the potential hazards of Centrum Select Chewable (Magnesium (Magnesium Oxide)) intoxication in eclampsia.

50% Centrum Select Chewable (Magnesium (Magnesium Oxide)) Sulfate Injection, USP must be diluted to a concentration of 20% or less prior to intravenous infusion. Rate of administration should be slow and cautious, to avoid producing hypermagnesemia. The 50% solution also should be diluted to 20% or less for intramuscular injection in infants and children.

Laboratory Tests

Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate injection should not be given unless hypomagnesemia has been confirmed and the serum concentration of Centrum Select Chewable (Magnesium (Magnesium Oxide)) is monitored. The normal serum level is 1.5 to 2.5 mEq/L.

Drug Interactions

CNS Depressants - When barbiturates, narcotics or other hypnotics (or systemic anesthetics), or other CNS depressants are to be given in conjunction with Centrum Select Chewable (Magnesium (Magnesium Oxide)), their dosage should be adjusted with caution because of additive CNS depressant effects of Centrum Select Chewable (Magnesium (Magnesium Oxide)). CNS depression and peripheral transmission defects produced by Centrum Select Chewable (Magnesium (Magnesium Oxide)) may be antagonized by calcium.

Neuromuscular Blocking Agents - Excessive neuromuscular block has occurred in patients receiving parenteral Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate and a neuromuscular blocking agent; these drugs should be administered concomitantly with caution.

Cardiac Glycosides - Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate should be administered with extreme caution in digitalized patients, because serious changes in cardiac conduction which can result in heart block may occur if administration of calcium is required to treat Centrum Select Chewable (Magnesium (Magnesium Oxide)) toxicity.

Pregnancy

Teratogenic Effects

Pregnancy Category D (See WARNINGS and PRECAUTIONS )

See WARNINGS and PRECAUTIONS .

Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate can cause fetal abnormalities when administered beyond 5 to 7 days to pregnant women. There are retrospective epidemiological studies and case reports documenting fetal abnormalities such as hypocalcemia, skeletal demineralization, osteopenia and other skeletal abnormalities with continuous maternal administration of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate for more than 5 to 7 days.^1-10 Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate injection should be used during pregnancy only if clearly needed. If this drug is used during pregnancy, the woman should be apprised of the potential harm to the fetus.

Nonteratogenic Effects

When administered by continuous intravenous infusion (especially for more than 24 hours preceding delivery) to control convulsions in a toxemic woman, the newborn may show signs of Centrum Select Chewable (Magnesium (Magnesium Oxide)) toxicity, including neuromuscular or respiratory depression (See OVERDOSAGE ).

Labor and Delivery

Continuous administration of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate is an unapproved treatment for preterm labor. The safety and efficacy of such use have not been established. The administration of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate outside of its approved indication in pregnant women should be by trained obstetrical personnel in a hospital setting with appropriate obstetrical care facilities.

Nursing Mothers

Since Centrum Select Chewable (Magnesium (Magnesium Oxide)) is distributed into milk during parenteral Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate administration, the drug should be used with caution in nursing women.

Geriatrics

Geriatric patients often require reduced dosage because of impaired renal function. In patients with severe impairment, dosage should not exceed 20 grams in 48 hours. Serum Centrum Select Chewable (Magnesium (Magnesium Oxide)) should be monitored in such patients.

ADVERSE REACTIONS

The adverse effects of parenterally administered Centrum Select Chewable (Magnesium (Magnesium Oxide)) usually are the result of Centrum Select Chewable (Magnesium (Magnesium Oxide)) intoxication. These include flushing, sweating, hypotension, depressed reflexes, flaccid paralysis, hypothermia, circulatory collapse, cardiac and central nervous system depression proceeding to respiratory paralysis. Hypocalcemia with signs of tetany secondary to Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate therapy for eclampsia has been reported.

OVERDOSAGE

Centrum Select Chewable (Magnesium (Magnesium Oxide)) intoxication is manifested by a sharp drop in blood pressure and respiratory paralysis. Disappearance of the patellar reflex is a useful clinical sign to detect the onset of Centrum Select Chewable (Magnesium (Magnesium Oxide)) intoxication. In the event of overdosage, artificial ventilation must be provided until a calcium salt can be injected intravenously to antagonize the effects of Centrum Select Chewable (Magnesium (Magnesium Oxide)).

For Treatment of Overdose

Artificial respiration is often required. Intravenous calcium, 10 to 20 mL of a 5% solution (diluted if desirable with isotonic sodium chloride for injection) is used to counteract effects of hypermagnesemia. Subcutaneous physostigmine, 0.5 to 1 mg may be helpful.

Hypermagnesemia in the newborn may require resuscitation and assisted ventilation via endotracheal intubation or intermittent positive pressure ventilation as well as intravenous calcium.

DOSAGE AND ADMINISTRATION

Dosage of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate must be carefully adjusted according to individual requirements and response, and administration of the drug should be discontinued as soon as the desired effect is obtained.

Both intravenous and intramuscular administration are appropriate. Intramuscular administration of the undiluted 50% solution results in therapeutic plasma levels in 60 minutes, whereas intravenous doses will provide a therapeutic level almost immediately. The rate of intravenous injection should generally not exceed 150 mg/minute (1.5 mL of a 10% concentration or its equivalent), except in severe eclampsia with seizures. Continuous maternal administration of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate in pregnancy beyond 5 to 7 days can cause fetal abnormalities.

Solutions for intravenous infusion must be diluted to a concentration of 20% or less prior to administration. The diluents commonly used are 5% Dextrose Injection, USP and 0.9% Sodium Chloride Injection, USP. Deep intramuscular injection of the undiluted (50%) solution is appropriate for adults, but the solution should be diluted to a 20% or less concentration prior to such injection in children.

In Centrum Select Chewable (Magnesium (Magnesium Oxide)) Deficiency

In the treatment of mild Centrum Select Chewable (Magnesium (Magnesium Oxide)) deficiency, the usual adult dose is 1 gram, equivalent to 8.12 mEq of Centrum Select Chewable (Magnesium (Magnesium Oxide)) (2 mL of the 50% solution) injected intramuscularly every six hours for four doses (equivalent to a total of 32.5 mEq of Centrum Select Chewable (Magnesium (Magnesium Oxide)) per 24 hours). For severe hypomagnesemia, as much as 250 mg (approximately 2 mEq) per kg of body weight (0.5 mL of the 50% solution) may be given intramuscularly within a period of four hours if necessary. Alternatively, 5 grams, (approximately 40 mEq) can be added to one liter of 5% Dextrose Injection, USP or 0.9% Sodium Chloride Injection, USP for slow intravenous infusion over a three-hour period. In the treatment of deficiency states, caution must be observed to prevent exceeding the renal excretory capacity.

In Hyperalimentation

In total parenteral nutrition, maintenance requirements for Centrum Select Chewable (Magnesium (Magnesium Oxide)) are not precisely known. The maintenance dose used in adults ranges from 8 to 24 mEq (1 gram to 3 grams) daily; for infants, the range is 2 to 10 mEq (0.25 gram to 1.25 grams) daily.

In Pre-eclampsia or Eclampsia

In severe pre-eclampsia or eclampsia, the total initial dose is 10 grams to 14 grams of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate. Intravenously, a dose of 4 grams to 5 grams in 250 mL of 5% Dextrose Injection, USP or 0.9% Sodium Chloride Injection, USP may be infused. Simultaneously, intramuscular doses of up to 10 grams (5 grams or 10 mL of the undiluted 50% solution in each buttock) are given. Alternatively, the initial intravenous dose of 4 grams may be given by diluting the 50% solution to a 10 or 20% concentration; the diluted fluid (40 mL of a 10% solution or 20 mL of a 20% solution) may then be injected intravenously over a period of three to four minutes. Subsequently, 4 grams to 5 grams (8 to 10 mL of the 50% solution) are injected intramuscularly into alternate buttocks every four hours as needed, depending on the continuing presence of the patellar reflex and adequate respiratory function. Alternatively, after the initial intravenous dose, some clinicians administer 1 gram to 2 grams/hour by constant intravenous infusion. Therapy should continue until paroxysms cease. A serum Centrum Select Chewable (Magnesium (Magnesium Oxide)) level of 6 mg/100 mL is considered optimal for control of seizures. A total daily (24 hr) dose of 30 grams to 40 grams should not be exceeded. In the presence of severe renal insufficiency, the maximum dosage of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate is 20 grams/48 hours and frequent serum Centrum Select Chewable (Magnesium (Magnesium Oxide)) concentrations must be obtained. Continuous use of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate in pregnancy beyond 5 to 7 days can cause fetal abnormalities.

Other Uses

In counteracting the muscle-stimulating effects of barium poisoning, the usual dose of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate is 1 gram to 2 grams given intravenously.

For controlling seizures associated with epilepsy, glomerulonephritis or hypothyroidism, the usual adult dose is 1 gram administered intramuscularly or intravenously.

In paroxysmal atrial tachycardia, Centrum Select Chewable (Magnesium (Magnesium Oxide)) should be used only if simpler measures have failed and there is no evidence of myocardial damage. The usual dose is 3 grams to 4 grams (30 to 40 mL of a 10% solution) administered intravenously over 30 seconds with extreme caution.

For reduction of cerebral edema, 2.5 grams (25 mL of a 10% solution) is given intravenously.

Incompatibilities

Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate in solution may result in a precipitate formation when mixed with solutions containing:

Alcohol (in high Heavy Metals

concentrations) Hydrocortisone sodium

Alkali carbonates and succinate

bicarbonates Phosphates

Alkali hydroxides Polymixin B sulfate

Arsenates Procaine hydrochloride

Barium Salicylates

Calcium Strontium

Clindamycin phosphate Tartrates

The potential incompatibility will often be influenced by the changes in the concentration of reactants and the pH of the solutions.

It has been reported that Centrum Select Chewable (Magnesium (Magnesium Oxide)) may reduce the antibiotic activity of streptomycin, tetracycline and tobramycin when given together.

Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.

HOW SUPPLIED

Centrum Select Chewable (Magnesium (Magnesium Oxide)) Sulfate Injection, USP is supplied in single-dose containers as follows:

Do not administer unless solution is clear and container is undamaged. Discard unused portion.

Store at 20 to 25°C (68 to 77°F).

REFERENCES

• Yokoyama K, Takahashi N, Yada Y. Prolonged maternal Centrum Select Chewable (Magnesium (Magnesium Oxide)) administration and bone metabolism in neonates. Early Hum Dev. 2010;86(3):187-91. Epub 2010 Mar 12.
• Wedig KE, Kogan J, Schorry EK et al. Skeletal demineralization and fractures caused by fetal Centrum Select Chewable (Magnesium (Magnesium Oxide)) toxicity. J. Perinatol. 2006; 26(6):371-4.
• Nassar AH, Sakhel K, Maarouf H, et al. Adverse maternal and neonatal outcome of prolonged course of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate tocolysis. Acta Obstet Gynecol Scan. 2006;85(9):1099-103.
• Malaeb SN, Rassi A, Haddad MC. Bone mineralization in newborns whose mothers received Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulphate for tocolysis of premature labor. Pediatr Radiol. 2004;34(5):384-6. Epub 2004 Feb 18.
• Matsuda Y, Maeda Y, Ito M, et al. Effect of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate treatment on neonatal bone abnormalities. Gynecol Obstet Invest. 1997;44(2):82-8.
• Schanler RJ, Smith LG, Burns PA. Effects of long-term maternal intravenous Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate therapy on neonatal calcium metabolism and bone mineral content. Gynecol Obstet Invest. 1997;43(4):236-41.
• Santi MD, Henry GW, Douglas GL. Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate treatment of preterm labor as a cause of abnormal neonatal bone mineralization. J Pediatr Orthrop. 1994;14(2):249-53.
• Holcomb WL, Shackelford GD, Petrie RH. Centrum Select Chewable (Magnesium (Magnesium Oxide)) tocolysis and neonatal bone abnormalities; a controlled study. Obstet Gynecol. 1991; 78(4):611-4.
• Cumming WA, Thomas VJ. Hypermagnesemia: a cause of abnormal metaphyses in the neonate. Am J Roentgenol. 1989; 152(5):1071-2.
• Lamm CL, Norton KL, Murphy RJ. Congenital rickets associated with Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate infusion for tocolysis. J Pediatr. 1988; 113(6):1078-82.
• McGuinness GA, Weinstein MM, Cruikshank DP, et al. Effects of Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate treatment on perinatal calcium metabolism. II. Neonatal responses. Obstet Gynecol. 1980; 56(5): 595-600.
• Riaz M, Porat R, Brodsky NL, et al. The effects of maternal Centrum Select Chewable (Magnesium (Magnesium Oxide)) sulfate treatment on newborns: a prospective controlled study. J. Perinatol. 1998;18(6 pt 1):449-54.

Hospira, Inc., Lake Forest, IL 60045 USA

LAB-1024-1.0

April 2017

Hospira Logo

50% Centrum Select Chewable (Magnesium (Magnesium Oxide)) Sulfate 5 g/10 mL (500 mg/mL)

Rx only

NDC 0409-1754-10

10 mL Single-dose syringe

50% Centrum Select Chewable (Magnesium (Magnesium Oxide)) Sulfate Injection, USP

5 g/10 mL (500 mg/mL) (4 mEq Mg++/mL)

MUST BE DILUTED FOR INTRAVENOUS USE.

For Intravenous or Intramuscular Use. Sterile. 4.06 mOsmol/mL (calc.).

Contains no more than 75 mcg/L of aluminum.

Hospira, Inc., Lake Forest, IL 60045 USA

Hospira

RL-6891

Manganese (Manganese Sulfate):

• Indications and usage
• Contraindications
• Warnings
• Precautions
• Adverse reactions
• Drug abuse and dependence
• Overdosage
• Dosage and administration
• How supplied
• Rl-0104
• Centrum Select Chewable (Manganese (Manganese Sulfate)) reviews

INDICATIONS AND USAGE

Centrum Select Chewable (Manganese (Manganese Sulfate)) 0.1 mg/mL (Manganese Chloride Injection, USP) is indicated for use as a supplement to intravenous solutions given for total parenteral nutrition (TPN).

Administration helps to maintain Centrum Select Chewable (Manganese (Manganese Sulfate)) serum levels and to prevent depletion of endogenous stores and subsequent deficiency symptoms.

CONTRAINDICATIONS

None known.

WARNINGS

Direct intramuscular or intravenous injection of Centrum Select Chewable (Manganese (Manganese Sulfate)) 0.1 mg/mL (Manganese Chloride Injection, USP) is contraindicated as the acidic pH of the solution (pH 2.0) may cause considerable tissue irritation.

Liver and/or biliary tract dysfunction may require omission or reduction of copper and Centrum Select Chewable (Manganese (Manganese Sulfate)) doses because these elements are primarily eliminated in the bile.

WARNING: This product contains aluminum that may be toxic. Aluminum may reach toxic levels with prolonged parenteral administration if kidney function is impaired. Premature neonates are particularly at risk because their kidneys are immature, and they require large amounts of calcium and phosphate solutions, which contain aluminum.

Research indicates that patients with impaired kidney function, including premature neonates, who receive parenteral levels of aluminum at greater than 4 to 5 mcg/kg/day accumulate aluminum at levels associated with central nervous system and bone toxicity. Tissue loading may occur at even lower rates of administration.

PRECAUTIONS

General

Do not use unless solution is clear and seal is intact.

Centrum Select Chewable ) 0.1 mg/mL (Manganese Chloride Injection, USP) should only be used in conjunction with a pharmacy directed admixture program using aseptic technique in a laminar flow environment; it should be used promptly and in a single operation without any repeated penetrations. Solution contains no preservatives; discard unused portion immediately after admixture procedure is completed.

Laboratory Tests

Serum Centrum Select Chewable (Manganese (Manganese Sulfate)) levels can be measured periodically at the discretion of the investigator. Because of the low serum concentration normally present, samples will usually be analyzed by a reference laboratory.

Carcinogenesis, Mutagenesis, and Impairment of Fertility

Long-term animal studies to evaluate the carcinogenic potential of Centrum Select Chewable ) 0.1 mg/mL (Manganese Chloride Injection, USP) have not been performed, nor have studies been done to assess mutagenesis or impairment of fertility.

Nursing Mothers

It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when Centrum Select Chewable (Manganese (Manganese Sulfate)) 0.1 mg/mL (Manganese Chloride Injection, USP) additive is administered to a nursing woman.

Pediatric Use

Safety and effectiveness in pediatric patients have not been established.

Pregnancy Category C.

Animal reproduction studies have not been conducted with Centrum Select Chewable (Manganese (Manganese Sulfate)) chloride. It is also not known whether Centrum Select Chewable (Manganese (Manganese Sulfate)) chloride can cause fetal harm when administered to a pregnant woman or can affect reproductive capacity. Centrum Select Chewable (Manganese (Manganese Sulfate)) chloride should be given to a pregnant woman only if clearly indicated.

Geriatric Use

An evaluation of current literature revealed no clinical experience identifying differences in response between elderly and younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

ADVERSE REACTIONS

None known.

DRUG ABUSE AND DEPENDENCE

None known.

OVERDOSAGE

Centrum Select Chewable (Manganese (Manganese Sulfate)) toxicity in TPN patients has not been reported.

DOSAGE AND ADMINISTRATION

Centrum Select Chewable (Manganese (Manganese Sulfate)) 0.1 mg/mL (Manganese Chloride Injection, USP) contains 0.1 mg manganese/mL and is administered intravenously only after dilution. The additive should be administered in a volume of fluid not less than 100 mL. For the adult receiving TPN, the suggested additive dosage for Centrum Select Chewable (Manganese (Manganese Sulfate)) is 0.15 to 0.8 mg/day (1.5 to 8 mL/day). For pediatric patients, a dosage of 2 to 10 mcg manganese/kg/day (0.02 to 0.1 mL/kg/day) is recommended.

Periodic monitoring of Centrum Select Chewable (Manganese (Manganese Sulfate)) plasma levels is suggested as a guideline for subsequent administration.

Parenteral products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. (See PRECAUTIONS .)

HOW SUPPLIED

Centrum Select Chewable (Manganese (Manganese Sulfate)) 0.1 mg/mL (Manganese Chloride Injection, USP) is supplied in 10 mL Plastic Vials (NDC No. 0409-4091-01).

Store at 20 to 25°C (68 to 77°F)

Revised: November, 2009

Printed in USA EN-2320

Hospira, Inc., Lake Forest, IL 60045 USA

RL-0104

Selenium (Sodium Selenate):

• Description
• Clinical pharmacology
• Indications and usage
• Contraindications
• Warnings
• Precautions
• Adverse reactions
• Overdosage
• Dosage and administration
• How supplied
• Centrum Select Chewable (Selenium (Sodium Selenate)) reviews

Rx Only

TRACE ELEMENT ADDITIVE FOR IV USE AFTER DILUTION

DESCRIPTION

Centrum Select Chewable (Selenium (Sodium Selenate)) Injection is a sterile, nonpyrogenic solution for use as an additive to solutions for Total Parenteral Nutrition (TPN).

Each mL contains Selenious Acid 65.4 mcg (equivalent to elemental Centrum Select Chewable (Selenium (Sodium Selenate)) 40 mcg/mL) and Water for Injection q.s. pH may be adjusted with nitric acid to 1.8 to 2.4.

CLINICAL PHARMACOLOGY

Centrum Select Chewable (Selenium (Sodium Selenate)) is part of glutathione peroxidase which protects cell components from oxidative damage due to peroxides produced in cellular metabolism.

Prolonged TPN support in humans has resulted in Centrum Select Chewable (Selenium (Sodium Selenate)) deficiency symptoms which include muscle pain and tenderness. The symptoms have been reported to respond to supplementation of TPN solutions with Centrum Select Chewable (Selenium (Sodium Selenate)).

Pediatric conditions, Keshan disease, and Kwashiorkor, have been associated with low dietary intake of Centrum Select Chewable (Selenium (Sodium Selenate)). The conditions are endemic to geographical areas with low Centrum Select Chewable (Selenium (Sodium Selenate)) soil content. Dietary supplementation with Centrum Select Chewable (Selenium (Sodium Selenate)) salts has been reported to reduce the incidence of the conditions among affected children.

Normal blood levels of Centrum Select Chewable (Selenium (Sodium Selenate)) in different human populations have been found to vary and depend on the Centrum Select Chewable (Selenium (Sodium Selenate)) content of the food consumed. Results of surveys carried out in some countries are tabulated below:

Plasma Centrum Select Chewable (Selenium (Sodium Selenate)) levels of 0.3 and 0.9 mcg/100 mL have been reported to produce deficiency symptoms in humans.

Centrum Select Chewable (Selenium (Sodium Selenate)) is eliminated primarily in urine. However, significant endogenous losses through feces also occur. The rate of excretion and the relative importance of two routes varies with the chemical form of Centrum Select Chewable (Selenium (Sodium Selenate)) used in supplementation. Ancillary routes of elimination are lungs and skin.

INDICATIONS AND USAGE

Centrum Select Chewable (Selenium (Sodium Selenate)) Injection is indicated for use as a supplement to intravenous solutions given for total parenteral nutrition (TPN). Administration of Centrum Select Chewable (Selenium (Sodium Selenate)) in TPN solutions helps to maintain plasma Centrum Select Chewable (Selenium (Sodium Selenate)) levels and to prevent depletion of endogenous stores and subsequent deficiency symptoms.

CONTRAINDICATIONS

Centrum Select Chewable (Selenium (Sodium Selenate)) Injection should not be given undiluted by direct injection into a peripheral vein because of the potential for infusion phlebitis.

WARNINGS

Centrum Select Chewable (Selenium (Sodium Selenate)) Injection can be toxic if given in excessive amounts. Supplementation of TPN solution with Centrum Select Chewable (Selenium (Sodium Selenate)) should be immediately discontinued if toxicity symptoms are observed. Frequent determination of plasma Centrum Select Chewable (Selenium (Sodium Selenate)) levels during TPN support and close medical supervision is recommended.

Centrum Select Chewable (Selenium (Sodium Selenate)) Injection is a hypotonic solution and should be administered in admixtures only.

This product contains aluminum that may be toxic. Aluminum may reach toxic levels with prolonged parenteral administration if kidney function is impaired. Premature neonates are particularly at risk because their kidneys are immature, and they require large amounts of calcium and phosphate solutions, which contain aluminum.

Research indicates that patients with impaired kidney function, including premature neonates, who receive parenteral levels of aluminum at greater than 4 to 5 mcg/kg/day accumulate aluminum at levels associated with central nervous system and bone toxicity. Tissue loading may occur at even lower rates of administration.

PRECAUTIONS

As Centrum Select Chewable ) is eliminated in urine and feces, Centrum Select Chewable (Selenium (Sodium Selenate)) supplements may be adjusted, reduced or omitted in renal dysfunction and/or gastrointestinal malfunction. In patients receiving blood transfusions, contribution from such transfusions should also be considered. Frequent Centrum Select Chewable (Selenium (Sodium Selenate)) plasma level determinations are suggested as a guideline.

In animals, Centrum Select Chewable (Selenium (Sodium Selenate)) has been reported to enhance the action of Vitamin E and decrease the toxicity of mercury, cadmium and arsenic.

Pregnancy

Teratogenic Effects

Pregnancy Category C: Centrum Select Chewable (Selenium (Sodium Selenate)) at high dose levels (15-30 mcg/egg) has been reported to have adverse embryological effects among chickens. There are however, no adequate and wellcontrolled studies in pregnant women. Centrum Select Chewable (Selenium (Sodium Selenate)) Injection should be used during pregnancy only if potential benefit justifies the potential risk to the fetus.

Presence of Centrum Select Chewable (Selenium (Sodium Selenate)) in placenta and umbilical cord blood has been reported in humans.

ADVERSE REACTIONS

The amount of Centrum Select Chewable (Selenium (Sodium Selenate)) present in Centrum Select Chewable (Selenium (Sodium Selenate)) Injection is small. Symptoms of toxicity from Centrum Select Chewable (Selenium (Sodium Selenate)) are unlikely to occur at the recommended dosage level.

OVERDOSAGE

Chronic toxicity in humans resulting from exposure to Centrum Select Chewable (Selenium (Sodium Selenate)) in industrial environments, intake of foods grown in seleniferous soils, use of selenium-contaminated water, and application of cosmetics containing Centrum Select Chewable (Selenium (Sodium Selenate)) has been reported in literature. Toxicity symptoms include hair loss, weakened nails, dermatitis, dental defects, gastrointestinal disorders, nervousness, mental depression, metallic taste, vomiting, and garlic odor of breath and sweat. Acute poisoning due to ingestion of large amounts of Centrum Select Chewable (Selenium (Sodium Selenate)) compounds has resulted in death with histopathological changes including fulminating peripheral vascular collapse, internal vascular congestion, diffusely hemorrhagic, congested and edematus lungs, brick-red color gastric mucosa. The death was preceded by coma.

No effective antidote to Centrum Select Chewable (Selenium (Sodium Selenate)) poisoning in humans is known. Animal studies have shown casein and linseed oil in feeds, reduced glutathione, arsenic, magnesium sulfate, and bromobenzene to afford limited protection.

DOSAGE AND ADMINISTRATION

Centrum Select Chewable (Selenium (Sodium Selenate)) Injection provides 40 mcg selenium/mL. For metabolically stable adults receiving TPN, the suggested additive dosage level is 20 to 40 mcg selenium/day. For pediatric patients, the suggested additive dosage level is 3 mcg/kg/day.

In adults, Centrum Select Chewable (Selenium (Sodium Selenate)) deficiency states resulting from long-term TPN support, Centrum Select Chewable (Selenium (Sodium Selenate)) as selenomethionine or selenious acid, administered intravenously at 100 mcg/day for a period of 24 and 31 days, respectively, has been reported to reverse deficiency symptoms without toxicity.

Aseptic addition of Centrum Select Chewable (Selenium (Sodium Selenate)) Injection to the TPN solution under laminar flow hood is recommended. Centrum Select Chewable (Selenium (Sodium Selenate)) is physically compatible with the electrolytes and other trace elements usually present in amino-acid/dextrose solution used for TPN. Frequent monitoring of plasma Centrum Select Chewable (Selenium (Sodium Selenate)) levels is suggested as a guideline for subsequent administration. The normal whole blood range for Centrum Select Chewable (Selenium (Sodium Selenate)) is approximately 10 to 37 mcg/100 mL.

Parenteral drug products should be inspected visually for particulate matter and discoloration, whenever solution and container permit.

HOW SUPPLIED

Centrum Select Chewable (Selenium (Sodium Selenate)) Injection containing selenious acid 65.4 mcg/mL (equivalent to elemental Centrum Select Chewable (Selenium (Sodium Selenate)) 40 mcg/mL).

NDC 0517-6510-25 10 mL Single Dose Vial Packaged in boxes of 25

Store at 20° to 25°C (68° to 77°F); excursions permitted to 15° to 30°C (59° to 86°F).

AMERICAN

REGENT, INC.

SHIRLEY, NY 11967

IN6510

Rev. 11/15

PRINCIPAL DISPLAY PANEL - Container

NDC 0517-6510-25

Centrum Select Chewable (Selenium (Sodium Selenate)) INJECTION

Centrum Select Chewable (Selenium (Sodium Selenate)) 400 mcg/10 mL

(40 mcg/mL)

10 mL

SINGLE DOSE VIAL

Trace Element Additive

FOR IV USE AFTER DILUTION

PRESERVATIVE FREE

Rx Only

AMERICAN REGENT, INC.

SHIRLEY, NY 11967

PRINCIPAL DISPLAY PANEL - Carton

Centrum Select Chewable (Selenium (Sodium Selenate)) INJECTION

Centrum Select Chewable (Selenium (Sodium Selenate)) 400 mcg/10 mL

(40 mcg/mL)

Trace Element Additive

NDC 0517-6510-25

25 x 10 mL

SINGLE DOSE VIALS

FOR INTRAVENOUS USE AFTER DILUTION PRESERVATIVE FREE Rx Only

Each mL contains: Selenious Acid 65.4 mcg, Water for Injection q.s.

pH adjusted with Nitric Acid. Sterile, nonpyrogenic.

WARNING: DISCARD UNUSED PORTION. Store at 20°-25°C (68°-77°F); excursions

permitted to 15°-30°C (59°-86°F).

Directions for Use: See Package Insert.

AMERICAN REGENT, INC.

SHIRLEY, NY 11967

Rev. 11/05

Container Carton

Vitamin A (Retinol Acetate):

• Dosage and administration
• Warning
• Clinical pharmacology
• Dietary supplementation
• Warnings
• Precautions
• Adverse reactions
• Dosage and administration
• How supplied
• Centrum Select Chewable (Vitamin A (Retinol Acetate)) reviews

DOSAGE AND ADMINISTRATION

One tablet daily or as directed by a physician.

WARNING

KEEP OUT OF THE REACH OF CHILDREN.

In case of accidental overdose, seek professional assistance or contact a Poison Control Center immediately.

Other Ingredients: Artificial cherry flavor, artificial grape flavor, ascorbic acid, cholecalciferol, compressible sugar, D&C Red #7 calcium lake, FD&C Blue #1 aluminum lake, FD&C Yellow #6 aluminum lake, folic acid, magnesium stearate, microcrystalline cellulose, natural and artificial orange flavor, niacinamide, polyethylene glycol, pyridoxine HCl, riboflavin, sodium ascorbate, sodium fluoride, stearic acid, sucralose, thiamine HCl, Centrum Select Chewable (Vitamin A (Retinol Acetate)) acetate, vitamin B12 and vitamin E acetate.

Active ingredient for caries prophylaxis: Fluoride as sodium fluoride.

CLINICAL PHARMACOLOGY

Significant decrease in the incidence of dental caries can be linked to the fluoridation of the water supply (1ppm fluoride) during the period of tooth development.

Centrum Select Chewable (Vitamin A (Retinol Acetate)) Tablets provide sodium fluoride and ten essential vitamins in a chewable tablet. Because the tablets are chewable, they provide a topical as well as systemic source of fluoride. Hydroxyapatite is the principal crystal for all calcified tissue in the human body. The fluoride ion reacts with the Hydroxyapatite in the tooth as it is formed to produce the more caries-resistant crystal, fluorapatite.

The reaction may be expressed by the equation:

Three stages of fluoride deposition in tooth enamel can be distinguished:

• Small amounts (reflecting the low levels of fluoride in tissue fluids) are incorporated into the enamel crystals while they are being formed.
• After enamel has been laid down, fluoride deposition continues in the surface enamel. Diffusion of fluoride from the surface inward is apparently restricted.
• After eruption, the surface enamel acquires fluoride from the water, food, supplementary fluoride and smaller amounts of saliva.

DIETARY SUPPLEMENTATION

Multivitamins with fluoride offer supplementation of the diet with 10 vitamins and fluoride.

WARNINGS

AS IN THE CASE OF ALL MEDICATIONS, KEEP OUT OF THE REACH OF CHILDREN. This tablet should be chewed. This product, as with all chewable tablets are not recommended for children under the age of 4 due to risk of choking.

PRECAUTIONS

The suggested dose of Centrum Select Chewable (Vitamin A (Retinol Acetate)) Tablets should not be exceeded, since dental fluorosis may result from continued ingestion of large amounts of fluoride.

Before recommending Centrum Select Chewable (Vitamin A (Retinol Acetate)) Tablets

• Determine the fluoride content of the drinking water from all major sources
• Make sure the child is not receiving significant amounts of fluoride from other sources such as medications and swallowed toothpaste
• Periodically check to make sure that the child does not develop significant dental fluorosis.

ADVERSE REACTIONS

Allergic rash and other idiosyncrasies have been rarely reported.

To report SUSPECTED ADVERSE REACTIONS, contact H2-Pharma, LLC at 1 (866) 592-6438 or FDA at 1 (800) 332-1088 or via the web at www.fda.gov/medwatch/index.html for voluntary reporting of adverse reactions.

DOSAGE AND ADMINISTRATION

One tablet daily or as directed by a physician.

HOW SUPPLIED

Centrum Select Chewable ) Tablets 0.25 mg are available as orange, red and purple chewable tablets imprinted with "151" in 100 tablet bottles.

Centrum Select Chewable (Vitamin A (Retinol Acetate)) Tablets 0.5 mg are available as orange, red and purple chewable tablets imprinted with "152" in 100 tablet bottles.

Centrum Select Chewable (Vitamin A (Retinol Acetate)) Tablets 1.0 mg are available as orange, red and purple chewable tablets imprinted with "153" in 100 tablet bottles.

STORAGE

Store at controlled room temperature 20ºC-25ºC (68º-77ºF), excursions permitted between 15º-30ºC (59º-86ºF).

Distributed by:

H2-Pharma, LLC

2010 Berry Chase Place

Montgomery, AL 36117

www.h2-pharma.com

1067084

61269-151-01

MultiVitamin

with Fluoride

Chewable Tablets

Rx

0.25 mg

MultiVitamin and Fluoride Supplement

Dietary Supplement

100 Tablets

H²pharma

Vitamin B12 (Cyanocobalamin):

• Pharmacological action
• Pharmacokinetics
• Why is Centrum Select Chewable ) prescribed?
• Dosage and administration
• Centrum Select Chewable (Vitamin B12 (Cyanocobalamin)) side effects, adverse reactions
• Centrum Select Chewable ) contraindications
• Centrum Select Chewable ) using during pregnancy and breastfeeding
• Special instructions
• Centrum Select Chewable (Vitamin B12 (Cyanocobalamin)) drug interactions
• Centrum Select Chewable (Vitamin B12 (Cyanocobalamin)) reviews

Pharmacological action

Centrum Select Chewable ) refers to a group of water-soluble vitamins. It has high biological activity. Centrum Select Chewable (Vitamin B12 (Cyanocobalamin)) is necessary for normal hematopoiesis (promotes maturation of erythrocytes). Involved in the processes of transmethylation, hydrogen transport, synthesis of methionine, nucleic acids, choline, creatine. Contributes to the accumulation in erythrocytes of compounds containing sulfhydryl groups. Has a beneficial effect on liver function and the nervous system. Activates the coagulation of blood in high doses causes an increase in the activity of thromboplastin and prothrombin.

Pharmacokinetics

After oral administration Centrum Select Chewable (Vitamin B12 (Cyanocobalamin)) absorbed from the gastrointestinal tract. Metabolized in the tissues, becoming a co-enzyme form - adenosylcobalamin which is the active form of cyanocobalamin. Excreted in bile and urine.

Why is Centrum Select Chewable ) prescribed?

Anemia due to B12-deficiency conditions; in the complex therapy for iron and posthemorrhagic anemia; aplastic anemia caused by toxic substances and drugs; liver disease (hepatitis, cirrhosis); funicular myelosis; polyneuritis, radiculitis, neuralgia, amyotrophic lateral sclerosis; children cerebral palsy, Down syndrome, peripheral nerve injury; skin diseases (psoriasis, photodermatosis, herpetiformis dermatitis, neurodermatitis); to prevent and treat symptoms of deficiency of Centrum Select Chewable (Vitamin B12 (Cyanocobalamin)) (including the application of biguanide, PASA, vitamin C in high doses); radiation sickness.

Dosage and administration

Centrum Select Chewable ) is used as injections SC, IV, IM, intralumbar, and also oral. With anemia associated with Centrum Select Chewable (Vitamin B12 (Cyanocobalamin)) deficiency is introduced on 100-200 mcg in 2 days. In anemia with symptoms of funicular myelosis and megalocytic anemia with diseases of the nervous system - 400-500 micrograms in the first 7 days daily, then 1 time every 5-7 days. In the period of remission in the absence of events funicular myelosis maintenance dose - 100 mcg 2 times a month, in the presence of neurological symptoms - at 200-400 mcg 2-4 times a month. In acute post-hemorrhagic anemia and iron anemia by 30-100 mcg 2-3 times a week. When aplastic anemia (especially in children) - 100 micrograms before clinical improvement. When nutritional anemia in infants and preterm - 30 mcg / day during 15 days.

In diseases of the central and peripheral nervous system and neurological diseases with a pain syndrome is administered in increasing doses - 200-500 mcg, with the improvement in the state - 100 mcg / day. The course of treatment with Centrum Select Chewable (Vitamin B12 (Cyanocobalamin)) is 2 weeks. In traumatic lesions of peripheral nervous system - at 200-400 mcg every other day for 40-45 days.

When hepatitis and cirrhosis - 30-60 mcg / day or 100 mg every other day for 25-40 days.

Dystrophy in young children, Down syndrome and cerebral palsy - by 15-30 mcg every other day.

When funicular myelosis, amyotrophic lateral sclerosis can be introduced into the spinal canal at 15-30 mcg, gradually increasing the dose of 200-250 micrograms.

In radiation sickness, diabetic neuropathy, sprue - by 60-100 mcg daily for 20-30 days.

When deficiency of Centrum Select Chewable (Vitamin B12 (Cyanocobalamin)) to prevent - IV or IM for 1 mg 1 time a month; for treatment - IV or IM for 1 mg daily for 1-2 weeks, the maintenance dose is 1-2 mg IV or IM from 1 per week, up to 1 per month. Duration of treatment is determined individually.

Centrum Select Chewable (Vitamin B12 (Cyanocobalamin)) side effects, adverse reactions

CNS: rarely - a state of arousal.

Cardiovascular system: rarely - pain in the heart, tachycardia.

Allergic reactions: rarely - urticaria.

Centrum Select Chewable ) contraindications

Thromboembolism, erythremia, erythrocytosis, increased sensitivity to cyanocobalamin.

Centrum Select Chewable ) using during pregnancy and breastfeeding

Cyanocobalamin can be used in pregnancy according to prescriptions.

Special instructions

When stenocardia should be used with caution in a single dose of Centrum Select Chewable ) 100 mcg. During treatment should regularly monitor the blood picture and coagulation. It is unacceptable to enter in the same syringe with cyanocobalamin solutions of thiamine and pyridoxine.

Centrum Select Chewable (Vitamin B12 (Cyanocobalamin)) drug interactions

In an application of Centrum Select Chewable (Vitamin B12 (Cyanocobalamin)) with hormonal contraceptives for oral administration may decrease the concentration of cyanocobalamin in plasma.

In an application with anticonvulsant drugs decreased cyanocobalamin absorption from the gut.

In an Centrum Select Chewable (Vitamin B12 (Cyanocobalamin)) application with neomycin, aminosalicylic acid, colchicine, cimetidine, ranitidine, drugs potassium decreased cyanocobalamin absorption from the gut.

Cyanocobalamin may exacerbate allergic reactions caused by thiamine.

When parenteral application of chloramphenicol may decrease the hematopoietic effects of cyanocobalamin with anemia.

Pharmaceutical incompatibility

Contained in the molecule of cyanocobalamin cobalt ion contributes to the destruction of ascorbic acid, thiamine bromide, riboflavin in one solution.

Vitamin C (Ascorbic Acid):

• Pharmacological action
• Pharmacokinetics
• Why is Centrum Select Chewable ) prescribed?
• Dosage and administration
• Centrum Select Chewable (Vitamin C (Ascorbic Acid)) side effects, adverse reactions
• Centrum Select Chewable ) contraindications
• Using during pregnancy and breastfeeding
• Special instructions
• Centrum Select Chewable ) drug interactions
• Centrum Select Chewable ) in case of emergency / overdose
• Centrum Select Chewable (Vitamin C (Ascorbic Acid)) reviews

Pharmacological action

Centrum Select Chewable ) (vitamin c) is essential for the formation of intracellular collagen, is required to strengthen the structure of teeth, bones, and the capillary walls. Centrum Select Chewable (Vitamin C (Ascorbic Acid)) participates in redox reactions, the metabolism of tyrosine, converting folic acid into folinic acid, metabolism of carbohydrates, the synthesis of lipids and proteins, iron metabolism, processes of cellular respiration. Reduces the need for vitamins B1, B2, A, E, folic acid, pantothenic acid, enhances the body's resistance to infections; enhances iron absorption, contributing to its sequestration in reduced form. Centrum Select Chewable (Vitamin C (Ascorbic Acid)) has antioxidant properties.

With intravaginal application of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) lowers the vaginal pH, inhibiting the growth of bacteria and helps to restore and maintain normal pH and vaginal flora (Lactobacillus acidophilus, Lactobacillus gasseri).

Pharmacokinetics

After oral administration Centrum Select Chewable (Vitamin C (Ascorbic Acid)) is completely absorbed from the gastrointestinal tract. Widely distributed in body tissues.

The concentration of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) in blood plasma in normal amounts to approximately 10-20 mg / ml.

The concentration of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) in white blood cells and platelets is higher than in erythrocytes and plasma. When deficient state of concentration in leucocytes is reduced later and more slowly and is regarded as the best criterion for evaluating the deficit than the concentration in plasma.

Plasma protein binding is about 25%.

Centrum Select Chewable (Vitamin C (Ascorbic Acid)) is reversibly oxidized to form dehydroascorbic acid, is metabolized with the formation of ascorbate-2-sulphate which is inactive and oxalic acid which is excreted in the urine.

Centrum Select Chewable (Vitamin C (Ascorbic Acid)) taken in excessive quantities is rapidly excreted unchanged in urine, it usually happens when exceeding a daily dose is 200 mg.

Why is Centrum Select Chewable ) prescribed?

For systemic use of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) RiteMED Phils: prevention and treatment of hypo- and avitaminosis of vitamin C; providing increased need for vitamin C during growth, pregnancy, lactation, with heavy loads, fatigue and during recovery after prolonged severe illness; in winter with an increased risk of infectious diseases.

For intravaginal use: chronic or recurrent vaginitis (bacterial vaginosis, nonspecific vaginitis) caused by the anaerobic flora (due to changes in pH of the vagina) in order to normalize disturbed vaginal microflora.

Dosage and administration

This medication administered orally, IM, IV, intravaginally.

For the prevention of deficiency conditions Centrum Select Chewable ) dose is 25-75 mg / day, for the treatment - 250 mg / day or more in divided doses.

For intravaginal used Centrum Select Chewable (Vitamin C (Ascorbic Acid)) drugs in appropriate dosage forms.

Centrum Select Chewable (Vitamin C (Ascorbic Acid)) side effects, adverse reactions

CNS: headache, fatigue, insomnia.

Digestive system: stomach cramps, nausea and vomiting.

Allergic reaction: describes a few cases of skin reactions and manifestations of the respiratory system.

Urinary system: when used in high doses - hyperoxaluria and the formation of kidney stones of calcium oxalate.

Local reactions: with intravaginal application - a burning or itching in the vagina, increased mucous discharge, redness, swelling of the vulva. Other: sensation of heat.

Centrum Select Chewable ) contraindications

Increased sensitivity to Centrum Select Chewable (Vitamin C (Ascorbic Acid)).

Using during pregnancy and breastfeeding

The minimum daily requirement of Centrum Select Chewable ) in the II and III trimester of pregnancy is about 60 mg.

Centrum Select Chewable (Vitamin C (Ascorbic Acid)) crosses the placental barrier. It should be borne in mind that the fetus can adapt to high doses of Centrum Select Chewable (Vitamin C (Ascorbic Acid)), which takes a pregnant woman, and then a newborn baby may develop the ascorbic disease as the reaction of cancel. Therefore, during pregnancy should not to take Centrum Select Chewable (Vitamin C (Ascorbic Acid)) in high doses, except in cases where the expected benefit outweighs the potential risk.

The minimum daily requirement during lactation (breastfeeding) is 80 mg. Centrum Select Chewable (Vitamin C (Ascorbic Acid)) is excreted in breast milk. A mother's diet that contains adequate amounts of Centrum Select Chewable (Vitamin C (Ascorbic Acid)), is sufficient to prevent deficiency in an infant. It is unknown whether dangerous to the child's mother use of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) in high doses. Theoretically it is possible. Therefore, it is recommended not to exceed the maximum daily nursing mother needs to Centrum Select Chewable (Vitamin C (Ascorbic Acid)), except when the expected benefit outweighs the potential risk.

Special instructions

Centrum Select Chewable (Vitamin C (Ascorbic Acid)) is used with caution in patients with hyperoxaluria, renal impairment, a history of instructions on urolithiasis. Because Centrum Select Chewable (Vitamin C (Ascorbic Acid)) increases iron absorption, its use in high doses can be dangerous in patients with hemochromatosis, thalassemia, polycythemia, leukemia, and sideroblastic anemia.

Patients with high content body iron should apply Centrum Select Chewable (Vitamin C (Ascorbic Acid)) in minimal doses.

Centrum Select Chewable (Vitamin C (Ascorbic Acid)) is used with caution in patients with deficiency of glucose-6-phosphate dehydrogenase.

The use of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) in high doses can cause exacerbation of sickle cell anemia.

Data on the diabetogenic action of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) are contradictory. However, prolonged use of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) should periodically monitor your blood glucose levels.

It is believed that the use of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) in patients with rapidly proliferating and widely disseminated tumors may worsen during the process. It should therefore be used with caution in Centrum Select Chewable (Vitamin C (Ascorbic Acid)) in patients with advanced cancer.

Absorption of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) decreased while use of fresh fruit or vegetable juices, alkaline drinking.

Centrum Select Chewable ) drug interactions

In an application with barbiturates, primidone increases the excretion of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) in the urine.

With the simultaneous use of oral contraceptives reduces the concentration of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) in blood plasma.

In an application of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) with iron preparations Centrum Select Chewable (Vitamin C (Ascorbic Acid)), due to its regenerative properties, transforms ferric iron in the bivalent, which improves its absorption.

Centrum Select Chewable (Vitamin C (Ascorbic Acid)) in high doses can decrease urine pH that while the application reduces the tubular reabsorption of amphetamine and tricyclic antidepressants.

With the simultaneous use of aspirin reduces the absorption of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) by about a third.

Centrum Select Chewable (Vitamin C (Ascorbic Acid)) in an application with warfarin may decrease effects of warfarin.

With the simultaneous application of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) increases the excretion of iron in patients receiving deferoxamine. In the application of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) at a dose of 500 mg / day possibly left ventricular dysfunction.

In an application with tetracycline is increased excretion of Centrum Select Chewable (Vitamin C (Ascorbic Acid)) in the urine.

There is a described case of reducing the concentration of fluphenazine in plasma in patients treated with Centrum Select Chewable (Vitamin C (Ascorbic Acid)) 500 mg 2 times / day.

May increase the concentration of ethinyl estradiol in the blood plasma in its simultaneous application in the oral contraceptives.

Centrum Select Chewable ) in case of emergency / overdose

Symptoms: long-term use of large doses (more than 1 g) - headache, increased CNS excitability, insomnia, nausea, vomiting, diarrhea, gastritis giperatsidnyh, ultseratsiya gastrointestinal mucosa, inhibition of the function insular apparatus of the pancreas (hyperglycemia, glycosuria), hyperoxaluria, nephrolithiasis (calcium oxalate), damage to the glomerular apparatus of the kidneys, moderate thamuria (when receiving a dose of 600 mg / day).

Decrease capillary permeability (possibly deteriorating trophic tissues, increased blood pressure, hypercoagulability, the development of microangiopathy).

When IV administration in high doses - the threat of termination of pregnancy (due to estrogenemia), hemolysis of red blood cells.