ACTIVE INGREDIENT: Amazon Basic Care Rapid Release Acetaminophen 500 mg Caplets active ingredient is 500 mg of acetaminophen, a pain reliever and fever reducer. Compare to Tylenol Extra Strength Rapid Release Gels active ingredient. EFFECTIVE: This product temporarily relieves minor aches and pains due to headache, muscular aches, backache, minor pain of arthritis, the common cold, toothache and premenstrual and menstrual cramps. Also temporarily reduces fever. EXTRA STRENGTH: These extra strength caplets are made for fast relief, with 500 mg of acetaminophen; package features a child-resistant cap FOR ADULTS: Amazon Basic Care Rapid Release Pain Relief, Acetaminophen Caplets 500 mg contain an extra strength pain reliever and fever reducer for adults and children ages 12 years and over GLUTEN FREE: This pain reliever and fever reducer is free of gluten, aspirin and caffeine.