Each tablet of Solgar Niacin provides: Niacin (Vitamin B3)100mg. Solgar Niacin tablets are tableted with these natural ingredients: dibcalcium phosphate, microcrystalline cellulose, stearic acid, magnesium stearate, cellulose gum. Directions:As a food supplement for adults, one (1) Solgar Niacin tablet daily, preferably at mealtime, or as directed by a healthcare practitioner.