Niacin, also called Vitamin B-3, is part of a coenzyme needed for energy metabolism. * Niacin helps maintain healthy functions of the nervous system and skin, while promoting the health of your cardiovascular system. * Flush free means that you don't experience the familiar 'flush' when using this supplement. *Niacin is a water-soluble B vitamin. The B Vitamin Complex is made up of several essential nutrients that provide nourishment for the stress of daily living. **These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.