sixty-seven patients with endoscopically proven duodenal ulceration were entered into a double-blind study and randomized to treatment with pirenzepine ( pz ) ( gastrozepin ; boehringer ingelheim ) 50 mg twice daily or cimetidine ( cm ) ( tagamet ; smith kline & french laboratories ) 400 mg twice daily , given 30 minutes before breakfast and supper .
C0013295
duodenal ulceration
C0008783
cimetidine