An official Internet site of the United States federal government. This is how you are aware of we're official. dot gov icon Nonabsorbed ursodiol passes in to the colon exactly where it is usually 7-dehydroxylated to lithocholic acid. Some ursodiol is epimerized to chenodiol (CDCA) by means of a https://www.youtube.com/watch?v=A07qHOeWON8