About cyanocobalamin
Vitamin B12 supplement
Used for
- Treats or prevents vitamin B12 deficiency
- Helps treat deficiency-related anaemia and nerve problems
Usual adult dose
For deficiency, often 1–2 mg by mouth daily initially; maintenance dose depends on cause and response.
Common side effects
- Nausea or diarrhoea
- Headache or dizziness
- Rash or itching
Important warnings
- Some causes of deficiency need lifelong treatment or injections.
- Vitamin B12 deficiency can cause lasting nerve damage if untreated.
- Check the cause of deficiency; folate alone may hide blood changes while nerve damage progresses.
Pregnancy
Generally considered safe when needed to treat deficiency; usual nutritional needs vary during pregnancy.
Breastfeeding
Generally considered compatible with breastfeeding when used at recommended doses.
Interactions
- Chloramphenicol may reduce the blood response to treatment.
- Metformin and acid-reducing medicines can lower vitamin B12 levels over time.
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 It may be incomplete or out of date.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.