About mecobalamin
Vitamin B12 (cobalamin)
Used for
- Treats vitamin B12 deficiency, including deficiency-related anemia and nerve problems.
Usual adult dose
Commonly 1,000 micrograms by injection daily or several times weekly initially, then less often; schedules vary by cause and local guidance.
Usual dose in children
Used for confirmed deficiency; dose depends on age, weight, and clinical condition.
Common side effects
- Injection-site pain or redness
- Nausea or diarrhea
- Headache or dizziness
- Rare allergic reactions
Important warnings
- Seek urgent care for breathing difficulty, swelling, or widespread rash after injection.
- Low potassium can occur when severe anemia is treated.
- Treatment may mask blood abnormalities while nerve damage continues if the diagnosis is wrong.
Pregnancy
Vitamin B12 is important during pregnancy; use for deficiency under healthcare supervision.
Breastfeeding
Vitamin B12 is compatible with breastfeeding when used appropriately.
Interactions
- Chloramphenicol may reduce the blood-forming response to vitamin B12.
- Metformin and acid-reducing medicines can contribute to vitamin B12 deficiency.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.