A histamine agonist is a drug which causes increased activity at one or more of the four
histamine receptor
The histamine receptors are a class of G protein–coupled receptors which bind histamine as their primary endogenous ligand.
There are four known histamine receptors:
* H1 receptor
* H2 receptor
* H3 receptor
* H4 receptor
Comparison
Ther ...
subtypes.
H
2:
Betazole
Betazole (also known as ametazole) is a histamine H2 receptor agonist. Betazole hydrochloride is known as gastramine and histalog.
It has been used as a gastric stimulant to test for maximal production of gastric secretion activity. The test ...
and
Impromidine are examples of agonists used in diagnostics to increase histamine.
H
3:
Betahistine
Betahistine, sold under the brand name Serc among others, is an anti-vertigo medication. It is commonly prescribed for balance disorders or to alleviate vertigo symptoms. It was first registered in Europe in 1970 for the treatment of Ménière ...
is a weak Histamine
1 agonist and a very strong Histamine
3 antagonist (paradoxically histamine increasing).
See also
*
Histamine antagonist
Antihistamines are drugs which treat allergic rhinitis, common cold, influenza, and other allergies. Typically, people take antihistamines as an inexpensive, generic (not patented) drug that can be bought without a prescription and provides re ...
External links
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