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CyanocobalaminOver the counter
Pronounced sy-an-oh-ko-BAL-ah-min
Brand names: Vitamin B12
Type: Vitamin (B12) · All Other Medicines
What Cyanocobalamin is used for
- Vitamin B12 deficiency
- Pernicious anemia
- Preventing deficiency after stomach or bowel surgery and in some diets
◆ Kidney note
B12 deficiency contributes to anemia in kidney disease and is checked as part of anemia workups.
Common side effects
- Generally very few
- Mild diarrhea
- Injection site pain
Important cautions
- Treating severe B12 deficiency can temporarily lower potassium as new blood cells form — this is monitored in hospital-level deficiency
How it comes
Tablets, sublingual tablets, nasal spray, injection. This guide lists forms only — it never lists strengths or doses.
Related medicines — Other Medicines
Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.