[Treatment of cholesterol gallstones with ursodesoxycholic acid (author's transl)]

A double-blind clinical trial comparing ursodesoxycholic acid and chenodesoxycholic acid in patients with cholesterol stones in the gall-bladder showed that ursodesoxycholic acid was superior to the older drug not so much in percentage of biliary calculi dissolved but in dosage reduction (50%) and improved clinical and biological tolerance.