twenty-one patients with endoscopically proven active duodenal ulcers were studied in a double-blind randomized trial comparing doxepin hydrochloride ( 50 mg during the first week , and 100 mg thereafter , at bedtime ) and cimetidine ( 1,200 mg/day in four divided doses ) .
C0013295
duodenal ulcers
C0008783
cimetidine