Abstract
Six patients with cholesterol cholelithiasis were studied before and after 3 weeks treatment with phenobarbital, 120 mg/day. The kinetics of cholic and chenodeoxycholic acid and biliary lipid composition were not significantly affected by phenobarbital treatment although hepatic mixed-function oxidase was stimulated by the treatment as shown by increased breath output of 14 CO 2 after administration of [ 14 C]aminopyrine. It is concluded that treatment with phenobarbital is unlikely to be effective therapy for patients with cholesterol cholelithiasis.