the therapeutic efficacy of cimetidine given as 400 mg twice daily was compared to that of cimetidine given as 1.0 g daily in 4 divided doses ( 200 mg 3-times daily and 400 mg at night ) in two groups of 25 patients ( total 50 patients ) with active duodenal ulceration .
C0008783
cimetidine
C0013295
duodenal ulceration