Drug hepatotoxicity.

Drug-induced liver injury is a common but underdiagnosed cause of liver disease with an incidence that is rapidly increasing. The authors address some of the more controversial aspects in relation to drug-induced liver injury: recommendations on the use of anti-tuberculosis therapy in the presence of underlying cirrhosis, the role of periodic liver test monitoring and steroid therapy in relation to drug-induced liver injury, the presence of class effects associated with certain drugs, and the potential use of ursodeoxycholic acid in prolonged cholestasis.