Is commonly used for headaches and menstrual pain; it is especially effective as an anti-inflammatory agent. For arthritis, sprains, and other inflammation-based pain. appears to be superior to ibuprofen in that it better targets muscle-tissue inflammation and has less of an anti-platelet effect than aspirin. Dosing interval is longer (every 8-12 hours) than for other NSAIDs usually dosed for 4-6 hours.