antagonist

(redirected from H2 receptor antagonist)
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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 ?
pylori was seen in diabetic patients on oral hypoglycemic drugs (70) as compared to patients on insulin therapy, on NSAIDS and on H2 receptor antagonist Corroborating our results Ojetti et al observed that there is increase in insulin requirement in H.
Cost-effectiveness analysis: stress ulcer bleeding prophylaxis with proton pump inhibitors, h2 receptor antagonists.
These patients had failed previous treatment with H2 receptor antagonists and prokinetic agents (e.
9] The first thing to do as a treatment is to stop the doxycycline treatment [10] Proton pump inhibitors and H2 receptor antagonists can prevent the increase of the severity of oesophageal ulcer caused by exposure to the acidic gastric content secondary to gastroesophageal reflux by reducing the acid secretion.
The newly discovered H2 receptor antagonists worked better.
Acid-suppressing medications, including Proton pump inhibitors (PPI) and H2 receptor antagonists (H2RA), are among the most commonly used medications in developed countries.