from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A physiologically active amine, C5H9N3, found in plant and animal tissue and released from mast cells as part of an allergic reaction in humans. It stimulates gastric secretion and causes dilation of capillaries, constriction of bronchial smooth muscle, and decreased blood pressure.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An amine, C5H9N3, formed by decarboxylation of histidine, that causes dilatation of capillaries, contraction of smooth muscle, and stimulation of gastric acid secretion; it is released during allergic reactions.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. amine formed from histidine that stimulates gastric secretions and dilates blood vessels; released by the human immune system during allergic reactions


from The American Heritage® Dictionary of the English Language, 4th Edition

hist(idine) + amine.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From histidine + amine.


  • Beer, wine and liquor contain histamine, produced by yeast and bacteria during the fermentation process.

    Wine, allergies, histamines and sulfites - reactions from an allergist | Dr Vino's wine blog

  • During this retaliation, your body releases a chemical called histamine, which is the reason why your eyes will get teary and your nose starts to run.

    Nasal Allergies

  • This was not found to be the case, however, when the experiment was repeated with cuddling but no kissing, with no change in histamine levels found.

    Boing Boing: May 14, 2006 - May 20, 2006 Archives

  • In the case of the frog's capillaries, histamine is virtually without action, and this fact illustrates in a striking way the observation that all capillaries do not at all show the same reactions.

    August Krogh - Nobel Lecture

  • The next category of medicines is antihistamines, which block a chemical called histamine that is released by the body during an allergic reaction.

    Companies Cashing In On Allergies

  • A formerly widely used diagnostic test of a patient's susceptibility to develop peptic ulcer was to administer histamine, which is a powerful stimulant of gastric acid secretion.

    The Nobel Prize in Physiology or Medicine 1988 - Presentation Speech

  • The Vitamin Shoppe announced that Histame from Naturally Vitamins is now available. is a dietary supplement that helps with the discomforts of food intolerance, also known as histamine intolerance, by replenishing the body's enzyme Diamine Oxidase (DAO).


  • Most studies so far have focused on allergy-related itch, a reaction involving an itch mediator known as histamine and accounting for about one-third of all itch.

    Newswise: Latest News

  • One of the main chemicals in these mast cells is "histamine," a powerful chemical that is also toxic to the body.

    Dr. Richard Palmquist: Does Your Pet Have Allergies?

  • The second time the individual eats the food, these specific IgE molecules interact with each other, and the protein, to cause the release of harmful chemicals (such as histamine) from special mast cells.

    The Two Types of Food Allergies


Log in or sign up to get involved in the conversation. It's quick and easy.