gastric acid secretion , pepsin secretion , and fasting serum gastrin levels were measured in 23 patients with duodenal ulcer disease , divided into three groups which received either cimetidine 800 mg daily , cimetidine 1600 mg daily , or ranitidine hydrochloride 300 mg daily for eight weeks .
C0013295
duodenal ulcer disease
C0008783
cimetidine