Dexchlorpheniramine

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. ...
Found on http://en.wikipedia.org/wiki/Dexchlorpheniramine

dexchlorpheniramine

(deks″klor-fәn-ir┬┤ә-mēn) the dextrorotatory isomer of chlorpheniramine, having similar actions and uses as an antihistamine, but having approximately twice the activity by weight; used in the form of the maleate salt.
Found on http://www.encyclo.co.uk/local/21001
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