histamine blocking agent
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C5H9N3; a substance produced from the amino acid histidine, which causes dilation of blood vessels, increased secretion of acid by the stomach, smooth muscle constriction (e.g., in the bronchi), and mucus production, tissue swelling, and itching (during allergic reactions). The release of histamine from mast cells is a major component of type I hypersensitivity reactions, including asthma.
histamine blocking agentAntihistamine.
Water-soluble colorless crystals, sometimes called histamine acid phosphate or histamine diphosphate. It was used in the past to determine the acid-secreting power of the stomach.
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