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; ...

Vitamin B12 is an essential nutrient that plays a vital role in keeping you healthy. Here are 8 ways that this vitamin benefits your health, based on science.

Many vitamin B12 supplements contain much more of the vitamin than the body needs. ... the RDA of vitamin B12 by age is as follows: 0 to 6 months: 0.4 micrograms (mcg) 7 to 12 months: 0.5 mcg; ...

Even though this dose is nearly 500 times the RDA, it seems to be very common. Apparently, vitamin B12 is considered nontoxic, water-soluble and quickly metabolized.