About methylcobalamin
Vitamin B12 supplement
Used for
- Treats or prevents vitamin B12 deficiency.
- Supports treatment of certain nerve problems due to B12 deficiency.
Usual adult dose
Often 500–1,000 mcg by mouth daily; dose depends on the cause and severity of deficiency.
Usual dose in children
Dose is based on age, weight, and cause of deficiency; no single usual dose.
Common side effects
- Nausea or stomach discomfort
- Diarrhea
- Headache
- Rare allergic reactions, such as rash or swelling
Important warnings
- Seek medical assessment for suspected deficiency; untreated causes may need specific treatment.
- Vitamin B12 can affect some laboratory test results.
- Rarely, allergic reactions can occur, especially with cobalt sensitivity.
Pregnancy
Vitamin B12 is essential during pregnancy; use a suitable dose based on dietary needs or confirmed deficiency.
Breastfeeding
Vitamin B12 is compatible with breastfeeding and supports infant nutrition; dose depends on maternal needs.
Interactions
- Chloramphenicol may reduce response to vitamin B12 treatment.
- Metformin and long-term acid-reducing medicines can lower B12 levels.
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 It may be incomplete or out of date.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.