21st Century Niacin 500mg Prolonged Release, Heart Health Support, 110 Tablets

Energy & Circulatory Support Vitamin Supplement Gluten Free Guaranteed Quality - Laboratory TestedNiacin (vitamin B-3) plays a role in energy metabolism. Niacinamide is a good source of vitamin B-3 with a lower flushing effect than that of niacin. Prolonged release vitamins slowly release nutrients into the body over an extended period of time.