Nature's Way Niacin Directions Take 1 capsule daily, preferably with food. Supplement Facts Serving Size: 1 Capsule Servings Per Container: 100 Amt Per Serving% Daily Value Niacin (nicotinic acid)100 mg500% Other Ingredients: Millet, maltodextrin, gelatin (capsule), cellulose, magnesium stearate. Warnings