Advil 12 Hour contains 52 Tablets; relieves Arthritis, Muscle, Back, Joint pain and pain that results from inflammation; provides fast and effective relief of aches and pains that usually last longer than 6 hours, provides long lasting pain relief, up to 12 hours; take one tablet every 12 hours as needed, do not exceed 2 tablets in 24 hours, unless directed by a doctor. Active Ingredients: Ibuprofen, 600 mg 52 Tablets