In this Article
- What other names is Vitamin B12 known by?
- What is Vitamin B12?
- How does Vitamin B12 work?
- Are there safety concerns?
- Are there any interactions with medications?
- Dosing considerations for Vitamin B12.
Vitamin B12 is likely safe for pregnant or breast-feeding women when taken by mouth in the amounts recommended. The recommended amount for pregnant women is 2.6 mcg per day. Breast-feeding women should take no more than 2.8 mcg per day.
Vitamin B12 also appears to be safe when used on the skin for psoriasis. Mild itching has been reported in one person who used a specific avocado oil plus vitamin B12 cream for psoriasis.
Do not take vitamin B12 if:
- You have high numbers of red blood cells (polycythemia vera) or abnormal red blood cells (megaloblastic anemia).
- You have Leber's disease, a hereditary eye disease.
- You are allergic or sensitive to cobalt or cobalamin.
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