An official website of The usa governing administration. Here's how you are aware of we're Formal. dot gov icon Nonabsorbed ursodiol passes into your colon wherever it is mostly 7-dehydroxylated to lithocholic acid. Some ursodiol is epimerized to chenodiol (CDCA) by way of a 7-oxo intermediate. Chenodiol also undergoes https://www.youtube.com/watch?v=A07qHOeWON8