cyanocobalamin (cont.)

Pharmacy Author:
Medical and Pharmacy Editor:

For iron deficiency, the recommended dose is 30 mcg intramuscular injection once daily for 5-10 days then 100 to 200 mcg intramuscular injection monthly.

DRUG INTERACTIONS: Chloramphenicol (Chloromycetin) may decrease the effectiveness of cyanocobalamin. Cancer drugs may reduce the response to cyanocobalamin treatment. Use of colchicine (Colcrys) and heavy alcohol intake for longer than 2 weeks may decrease the absorption of vitamin B12.

PREGNANCY: Cyanocobalamin has not been adequately evaluated in pregnant women. However, vitamin B12 is an essential vitamin and requirements are increased during pregnancy.

NURSING MOTHERS: Cyanocobalamin is excreted into human milk and is safe to use while breastfeeding. Vitamin B12 requirements are increased in nursing mothers.

SIDE EFFECTS: Common side effects include joint pain, dizziness, headache, and cold symptoms. Severe allergic reactions, diarrhea, and heart failure have also been reported.

REFERENCE: FDA Prescribing Information

Medically Reviewed by a Doctor on 10/10/2014

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