A double-blind study of the analgesic action of benorylate suspension in osteoarthritis of the hip and knee.

This study compared benorylate suspension and placebo in a double-blind randomised cross-over design to investigate their analgesic effect in osteoarthritis of the hip and the knee. Benorylate and placebo were each given for 7 days. Assessment of efficacy and tolerance was carried out on the 7th day of each period. The results were subjected to sequential analysis and the analgesic effect of benorylate suspension was significantly demonstrated after 8 case reports. Mild digestive side effects appeared in 30% of patients. In addition, benorylate suspension was well tolerated in an open trial carried on for 30 to 90 days in 7 patients.