Dietary supplement with niacin at a concentration of 500 mg

Overview Niacin is vitamin B that your body produces and uses to convert food into energy. It also helps maintain the health of the nervous system, digestive system, skin, and hair. Niacin (vitamin B-3) is often part of daily vitamins, although most people get enough niacin from the food they eat. Foods rich in niacin include yeast, yogurt, meats, tortillas, and grains.