Sulindac (400 mg/day) has been compared with ibuprofen (1200 mg/day) in 40 patients with osteoarthrosis of the hip, over an eight-week period, in a double-blind controlled clinical trial. The two drugs were comparable in terms of patient preference, effects on hip movements, and toxicity. Sulindac showed superior analgesic properties to ibuprofen, resulting in a significantly greater reduction in pain on weight-bearing and with passive movements (P less than 0.01).