the endocrine effects of short-term ( 4 weeks ) and long-term ( 6 months ) oral administration of famotidine ( 40 and 20 mg nocte , respectively ) and ranitidine ( 300 and 150 mg nocte , respectively ) , were investigated in 20 male patients with duodenal ulcers .
C0015620
famotidine
C0013295
duodenal ulcers