For 125 years, Bayer Aspirin has been a leading aspirin brand in pain relief. Bayer Back and Body Extra Strength Aspirin is a powerful pain reliever with a dual action formula containing 500mg aspirin and 32.5mg of caffeine to help boost the pain-relieving effects of aspirin. These extra strength back andbody pain relief pills provide safe, proven pain relief, when taken as directed, at the site of backache and muscle aches and pains. Each 500mg aspirin tablet is coated for ease of swallowing and is free of sodium. Adults and children over 12 take 1 or 2 caplets every 6 hours with a full glass of water, not exceeding 8 caplets in a 24-hour period. Use as directed.