h2-histamine receptor blocking agents metiamide and cimetidine were assessed in seven patients with zollinger-ellison syndrome ( serum gastrin greater than 300 microgram/ml , basal acid output greater than 15 meq/h , ratio of basal acid output to maximal acid output greater than 0.5 ) .
C0008783
cimetidine
C0043515
zollinger-ellison syndrome