Cholestatic hepatitis induced by prolonged administration of nalidixic acid: Anti biotics like other drugs may generally produce hepatic benign lesions. We have recently observed a case of cholestatic hepatitis by prolonged administration of nalidixic acid. This hepatitis have regressed rapidly after discont inuin-c the dru g. This case dose not excluded the value of nalidixic acid asa strong antibiotic but it to the category of hepat otoxic drugs