UDCA may be offered soon after bariatric surgical procedure to avoid cholelithiasis, which normally takes place due to the rapid weight-loss making biliary cholesterol oversaturation in addition to biliary dyskinesia secondary to hormonal variations.[thirteen] Nonabsorbed ursodiol passes into the colon exactly where it is mostly 7-dehydroxylated to lithocholic acid. https://www.youtube.com/watch?v=A07qHOeWON8