Nature´s Plus Niacinamide is another form of Vitamin B-3, like Niacin. Check with your health care provider as to which form of Vitamin B-3 might be preferred for your individual pursuit of well-being and health maintenance. Nature´s Plus products are manufactured according to the highest possible standards, with advanced quality control techniques always applied.Ingredients - One tablet of Nature´s Plus Niacinamide provide:Niacin (as Niacinamide) 500mgOther IngredientsMicrocrystalline cellulose, di-calcium phosphate, stearic acid, rice bran, magnesium stearate, pharmaceutical glaze, silicaDirectionsServing Size 1 Tablet SUITABLE FOR VEGETARIANS, CONTAINS NO YEAST, WHEAT, CORN, SOY OR MILK