antagonist

(redirected from H1 receptor antagonist)
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Related to H1 receptor antagonist: H2 receptor antagonist

antagonist

1. any muscle that opposes the action of another
2. a drug that counteracts the effects of another drug

antagonist

[an′tag·ə‚nist]
(biochemistry)
A molecule that bears sufficient structural similarity to a second molecule to compete with that molecule for binding sites on a third molecule.
(pharmacology)
A drug or other chemical substance capable of reducing the physiological activity of another chemical substance; refers especially to a drug that opposes the action of a drug or other chemical substance on the nervous system by combining with and blocking the nerve receptor.
(physiology)
A muscle that contracts with, and limits the action of, another muscle, called an agonist, with which it is paired.
References in periodicals archive ?
LAS VEGAS -- Nonsedating H1 receptor antagonists should be frontline therapy in treating chronic idiopathic urticaria, Dr.
TABLE 22LEADING MANUFACTURERS OF H1 RECEPTOR ANTAGONISTS 40
TABLE 21 LEADING MANUFACTURERS/SUPPLIERS OF H1 RECEPTOR ANTAGONISTS 51