12. known intolerance or allergy to niacin (nicotinic acid), niacinamide (nicotinamide), or any of the tablet ingredients: 1-methylnicotinamide chloride, microcrystalline cellulose, povidone, silicified microcrystalline cellulose, crospovidone, anhydrous dibasic calcium phosphate, hydroxypropyl cellulose, magnesium stearate (vegetable origin), polyvinyl alcohol, titanium dioxide, talc, polyethylene glycol, methacrylic acid copolymer, and sodium bicarbonate.