“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 ...

While vitamin B complex plays a role in energy, brain health, and other functions, taking too much can cause side effects. High doses are usually considered to be more than the recommended daily ...

Although most people can meet their vitamin B needs by eating a balanced diet, B complex supplements are very popular. They're often marketed for energy, metabolism and ... The recommended daily ...