Urivron Tablet is unsafe to use during pregnancy as there is definite evidence of risk to the developing baby.used to treat primary biliary cirrhosis, a kind of liver disease. Certain gallstones can be dissolved and prevented from developing with the use of an Ursolid 300 mg tablet. It is also used to treat a type of liver disease called primary biliary cirrhosis. It aids in the dissolution of gallbladder stones by breaking down cholesterol that has turned into them.