Bayer Back & Body's dual action formula includes aspirin and a pain relief booster to provide fast relief at the site of pain. * Bayer Back & Body Extra Strength Pain Reliever Aspirin w Caffeine, 500mg Coated Tablets, 100 Ct: Bayer Back & Body provides fast, safe, proven pain relief from backache or muscle aches and pains * Each caplet contains caffeine to help boost the pain-relieving effects of aspirin * Bayer Back & Body Is sodium-free * Each caplet is coated to make it easier to swallow * Use as directed