Chlorpheniramine Maleate

Chlorpheniramine maleate is a histamine h1 antagonist used in allergic reactions, hay fever, rhinitis, urticaria, and asthma. It has also been used in veterinary applications. One of the most widely used of the classical antihistaminics it generally causes less drowsiness and sedation than promethazine.
Chlorpheniramine maleate is a synthetic alkylamine derivative used in allergic reactions, hay fever, rhinitis, urticaria, and asthma, antihistamine chlorpheniramine maleate acts as a competitive histamine h1 receptor antagonist, and displays anticholinergic and mild sedative effects as well.