The ideal dose of vitamin B12 varies based on your sex, age, and reasons for taking it. This article examines the scientific evidence behind recommended dosages for B12 for different people and uses.

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

Taking healthy doses of vitamin B12 can benefit your body in the following ways: ... B12 injections vs. B12 supplements. There are many factors at play when considering injections and supplements.

The best vitamin B12 foods include clams, liver, ... The absorption of vitamin B12 is about 2% at doses of 500 mcg or 1.3% at a dose of 1,000 mcg. ... who may recommend vitamin B12 injections.

Vitamin B12 replacement is where a deficiency is treated with prescribed doses of the vitamin, either as tablets or intramuscular injections, to increase the concentrations in the body. Next page ...

A person will continue to receive intramuscular vitamin B12 injections, or a doctor may suggest high dose oral vitamin B12 supplements. A person must continue with treatment for the rest of their ...