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be·ta·zole hy·dro·chlor·ide(bā'tă-zōl hī'drō-klōr'īd),
An analogue of histamine that stimulates gastric secretion by an action on H2 receptors with less tendency to produce the side effects seen with histamine; used, in place of histamine, to measure the gastric secretory response.
An isomer of histamine used intramuscularly to stimulate gastric secretion. It is contraindicated in those with atopic allergy.