|CompTox Dashboard (EPA)|
|Chemical and physical data|
|Molar mass||274.788 g/mol g·mol−1|
|3D model (JSmol)|
Dexchlorpheniramine (trade name Polaramine) is an antihistamine with anticholinergic properties used to treat allergic conditions such as hay fever or urticaria. It is the pharmacologically active dextrorotatory isomer of chlorpheniramine.
It was patented in 1962 and came into medical use in 1959.
Dexchlorpheniramine is an antihistamine, or an antagonist of the histamine H1 receptor. A study found that dexchlorpheniramine had a Ki value of 20 to 30 μM for the muscarinic acetylcholine receptors using rat brain tissue.
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