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.

When your body doesn't receive enough vitamin B12, it slows the growth of red blood cells. A cumulative loss of red blood cells can result in vitamin B12 deficiency anemia. With it, you can experience ...

If a person does not get enough vitamin B12, a doctor may suggest supplements containing more than the daily recommended dose. The body does not store excess vitamin B12, so taking extra is not ...

The recommended dietary intake (RDI) of vitamin B12 is 2.4 micrograms (mcg) per day for most adults, though the requirement ...

People with kidney problems or pregnant women should be cautious with B12 intake. ... those on high-dose B12 supplements, ...

The National Institutes of Health recommends that the average man consume a mere 2.4 micrograms a day, which is actually the lowest daily recommended dose of any vitamin. “Vitamin B12 ...