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.

A vitamin B12 deficiency can cause a range of mild to severe side effects, including anemia, weakness and fatigue, and birth defects in infants. Dosage information Many brands of liquid vitamin ...

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 ...

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

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 ...

Provides a high-potency 1000 mcg dose of vitamin B12 as methylcobalamin, a naturally bioactive, MTHFR-friendly form of the vitamin, which the body can use directly without conversion.

Vitamin B12 is best taken with a meal or in the morning for maximum absorption and the least amount of negative effects. Though some experts advise taking it on an empty stomach, particularly if ...

Vitamin B12 side effects . Side effects from vitamin B12 supplementation are rare, and only occur with B12 injections, not oral supplementation, Allen says.

VITAMIN B12 toxicity occurs when a person exceeds the recommended dosage of either supplements or injections. When this occurs there are a number of side effects to be aware of.