Source Naturals Niacin,100 mg ,100 Tabs (Pack of 4)

Dietary Supplement.Ingredients: Supplement Facts Serving Size: 1 Tablet Amount Per Serving %Daily Value Niacin 100 mg 500% Calcium 21 mg 2% Other Ingredients: Microcrystalline cellulose, dibasic calcium phosphate, stearic acid, silica, and magnesium stearate.