About carbinoxamine maleateh1 receptor antagonist, ethanolamine antihistamines, anticholinergic, antihistamine.mechanism of action of carbinoxamine maleatecarbinoxamine maleate exerts it`s action by acting as an h1 receptor antagonist. it antagonizes most of the pharmacological actions of histamine and reduces allergic symptoms. it also has anticholinergic properties and reduces secretions.