Successful treatment of biliary colic with intravenous ketoprofen or lysine acetylsalicylate.

In a double-blind trial, 60 patients with biliary colic were allocated at random to receive 200 mg ketoprofen, 1.8 g lysine acetylsalicylate or placebo by intravenous bolus. The patients were asked to rate their pain at intervals within 3 hours of injection and to indicate their overall pain experience on a visual analogue scale. Both ketoprofen and lysine acetylsalicylate proved significantly more effective than placebo in relieving pain, with no significant difference between them. A good analgesic response, reflected by complete or almost complete relief of pain within 30 minutes of injection, was recorded in 4, 17, and 16 patients, respectively, in the placebo, ketoprofen, and lysine acetylsalicylate treatment groups. All drugs were well tolerated. It is concluded that the results provide further evidence for a useful therapeutic role of prostaglandin inhibitors in the treatment of biliary colic.