Medically reviewed by Jonathan Purtell, RDN Vitamin B12 helps your body make red blood cells, produce energy, and keep your ...

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

ANSWER: The DV (a replacement for what we used to call the recommended daily allowance, or RDA) for vitamin B12 is 2.4 mcg. (There are 1,000 micrograms in a milligram, so 2.4 mcg is a very small ...

—Vitamin A: RDA, 900 micrograms for men, 700 for women. Found in carrots and other dark-colored vegetables and fruits. Upper limit, 3,000 micrograms. ...

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 ...

When it comes to vitamin B12, even a small amount can provide for daily needs. Dietary sources are animal-based foods – meat, poultry, fish/shellfish, eggs and dairy.