Each vitamin has a unique role in a person’s health. Vitamin B-complex supplements include all of the essential B vitamins in one pill. Some of these supplements contain 100% of the recommended ...

Talk to your pharmacist for more details. Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

If B complex upsets your stomach ... contain mega-doses and they're often under-regulated because they aren’t approved by the U.S. Food and Drug Administration, the experts note. "There is always a ...