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 ...

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 ...

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).