IF YOU KNOW anyone who's deficient in a B vitamin, you may see them taking a vitamin B-complex supplement. They're being touted as a cure to all your vitamin B related needs—but do you really need it?

What Is Vitamin B Complex? Vitamin B complex is a supplement that contains eight B vitamins that perform important and related roles in your body’s cellular function. The vitamins that make up B ...

“Vitamin B” refers to eight different vitamins, which all play a role in converting food into energy in the body. Each vitamin has a unique role in a person’s health. Vitamin B-complex supplements ...