Description:Nutritional Health Sustained Release Vegetarian Formula Niacin is a B vitamin. It occurs naturally in plants and animals, and is also added to many foods as a vitamin supplement. It is present in many vitamin and nutritional supplements.Ingredient Details:Supplement FactsServing Size: 1 TabletServings Per Container: 250Amount Per Serving Niacin (Vitamin B-3) 500 mg Other Ingredients: Dicalcium Phosphate, Cellulose, Stearic Acid (vegetable source), Magnesium Stearate (vegetable source) and Silica.Suggested Use:As a dietary supplement, take 1 tablet daily, preferably with meals. This extra high potency tablet should be taken under doctor's supervision. Niacin often causes itching or flushing but this sustained release tablet minimizes those problems. Consider taking this product in combination with NOW B-50 Complex, D-Ribose and Sytrinol.