H1-receptor antagonist
H1-receptor antagonists are the drugs that selectively bind to but do not activate histamine H1 receptors, thereby blocking the actions of endogenous histamine.
serotonergic antagonist
Drugs that bind to but do not activate serotonin receptors, thereby blocking the actions of serotonin or serotonergic agonists.
antipruritic drug
A drug, usually applied topically, that relieves pruritus (itching).
anti-allergic agent
A drug used to treat allergic reactions.
gastrointestinal drug
A drug used for its effects on the gastrointestinal system, e.g. controlling gastric acidity, regulating gastrointestinal motility and water flow, and improving digestion.
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