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 ...

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.

B12 supplements can come in a variety of forms — spray, liquid, capsule — which can make it difficult to know what to buy. That’s why we asked registered dietitians which ones they’d ...

Medically reviewed by Sohaib Imtiaz, MD Key TakeawaysTake vitamin B12 on an empty stomach in the morning or early afternoon to maximize absorption and avoid sleep disruptions.Vegans, older adults, and ...

Some people think that taking high doses of B12 — rather than the recommended intake — is best for their health. This practice has led many to wonder how much of this vitamin is too much.

Often, a vitamin B12 deficiency can look like normal signs of aging when, in fact, the deficiency itself is a sign of aging. Read more to discover how much vitamin B12 you should be ingesting as ...

Some people think that taking high doses of B12 — rather than the recommended intake — is best for their health. This practice has led many to wonder how much of this vitamin is too much.

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 ...

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 ...

Using significantly higher doses of vitamin D than recommended for five years did not affect the incidence of type 2 diabetes in elderly men and women, according to a new study from the University ...