histamine

As nouns the difference between histamine and burimamide

is that histamine is (neurotransmitter) 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 while burimamide is a thiourea derivative that acts as an antagonist at the h2 and h3 histamine receptors and whose discovery ultimately led to the development of cimetidine.

As nouns the difference between histamine and cimetidine

is that histamine is 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 while cimetidine is a histamine H2-receptor antagonist that inhibits the production of acid in the stomach, mainly used to treat heartburn and peptic ulcers, but notorious for causing male impotence.