cimetidine [si-met´ĭ-dēn] an antagonist of histamine H2receptors, inhibiting the action of histamine at cell surface receptors of the gastric parietal cells and reducing basal gastric acid secretion and secretion stimulated by food, histamine, gastrin, caffeine, and insulin. It is used for the short-term (two months) treatment and, at reduced dosage ...
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