gastric acid secretion , gastric emptying , fasting serum gastrin and the serum gastrin response to a meal were measured in duodenal ulcer patients before , and at least five days after completing prolonged treatment with cimetidine ( 1 or 2 g/day for four or eight weeks followed by 600 mg twice daily for six months ) .
C0013295
duodenal ulcer
C0008783
cimetidine