The recommended dietary allowance (RDA) for vitamin B12 for people over 14 is 2.4 micrograms (mcg). However, you may need to take more or less, depending on your age, lifestyle, and specific ...

Medically reviewed by Kristie Reed, PharmD Vitamin B12, also known as cobalamin, is a water-soluble vitamin required for many ...

Dear I.F.: The DV (a replacement for what we used to call the recommended daily allowance, or RDA) for vitamin B12 is 2.4 mcg ...

Best vitamin B12 foods: Supplements and RDA. Medically reviewed by Jerlyn Jones, MS MPA RDN LD CLT — Written by Louisa Richards — Updated on August 21, 2024. Best vitamin B12 foods; ...

Bear in mind that the recommended daily allowance (RDA) of B12 is 2.4 mcg. The RDA is really a recommended minimum rather than a daily allowance, but your body is still unlikely to absorb most of ...