Whilst much less prevalent, essentially the most severe side effects of ursodiol are described under, coupled with what to do when they transpire. Nonabsorbed ursodiol passes into the colon where it is mostly 7-dehydroxylated to lithocholic acid. Some ursodiol is epimerized to chenodiol (CDCA) by means of a seven-oxo https://www.youtube.com/watch?v=A07qHOeWON8