B vitamins are water-soluble nutrients that are essential for countless bodily processes. Certain conditions, such as pregnancy and type 2 diabetes, require higher B vitamin intake to avoid the risk ...

Taking B complex can lead to stool changes. Some components of B complex, like niacin, may lead to yellow stools by damaging the liver.

DEAR DR. ROACH: I am 73, and I was worried about dementia. Turns out, I am “normal.” However, the neurologist told me to take 2,000 mcg of B12 daily. My multivitamin has 100 mcg, which is 4,167% of ...

A sample of recommended dietary allowances for certain vitamins and minerals, and upper limits for those deemed harmful at high doses, from the Institute of Medicine: —Vitamin A: RDA, 900 micrograms ...