Vitamatic Niacin (Vitamin B3) 500 mg is a high-potency dietary supplement providing 500 mg of niacin per tablet in a sustained-release formula designed to release gradually over time. Niacin is an essential B vitamin that contributes to normal energy metabolism and supports the normal functioning of the nervous system and skin. The formula contains 240 tablets and is non-GMO and gluten-free. It is also free from soy, yeast, wheat, egg, artificial colors, flavors, and preservatives. The manufacturer recommends taking one tablet daily with 8 to 12 oz of water or as directed by a healthcare professional.