Relieves Back Pain Magnesium Salicylate Tetrahydrate 580 mg Each (NSAID)Each Caplet Contains: Magnesium 50 mg Active Ingredients: Magnesium Salicylate Tetrahydrate 580 mg* (NSAID)^ (Pain Reliever) Inactive Ingredients: Hypromellose, Magnesium Stearate, Microcrystalline Cellulose, Polydextrose, Polyethylene Glycol, Stearic Acid, Titanium Dioxide, Triacetin