Monitor serum LFTs & bilirubin levels every mth for 3 mth after start of therapy, & every 6 mth thereafter. Consider discontinuation when serum LFTs increase to a level considered clinically significant for patients w/ recent history of adequate biochemical response to treatment. Exercise caution to maintain bile flow of patients taking ursodiol. Very rare post-marketing reports of bezoars leading to obstructive symptoms that require surgical interventions in ursodiol-treated patients w/ medical conditions that predispose to intestinal stenosis or stasis. Caution in patients w/ variceal bleeding, hepatic encephalopathy, ascites, or patients in need of urgent liver transplant, & when administered in a setting of partial biliary obstruction of extrahepatic origin. Should not be used in women who are or may become pregnant. Potential hazard to fetus. Exercise caution when administered to a nursing mother. No authorized indication for ped or geriatric use.