Niacin, Calcium, Microcrystalline cellulose, dibasic calcium phosphate, stearic acid, colloidal silicon dioxide, and magnesium stearate. Niacin 100 mg 500%. Source Naturals. Calcium 21 mg 2%. Other Ingredients: Microcrystalline cellulose, dibasic calcium phosphate, stearic acid, colloidal silicon dioxide, and magnesium stearate.
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