Ursomax must not be used in the presence of: Allergy to bile acids; Patients with gallstone complications such as biliary-gastrointestinal fistula, biliary obstruction, cholangitis, cholecystitis, pancreatitis or frequent biliary colic.
Ursomax is ineffective for the dissolution of calcified and pigment gallstones and is of no value in patients without a patent and functioning gallbladder.