to see whether the effect of cimetidine changes during a treatment period , the effect of intravenous cimetidine on pentagastrin-stimulated gastric acid and pepsin secretion was studied before and after a 6-week course of oral cimetidine treatment , 1 g/day , in 10 duodenal ulcer patients .
C0008783
cimetidine
C0013295
duodenal ulcer