The maleic acid salt of carbinoxamine. An ethanolamine-type antihistamine, used for treating hay fever, as well as mild cases of Parkinson's disease. ChEBI: Carbinoxamine maleate is the maleic acid salt of carbinoxamine. An ethanolamine-type antihistamine, used for treating hay fever, as well as mild cases of Parkinson's disease. It has a role as a H1-receptor antagonist, an anti-allergic agent, a muscarinic antagonist and an antiparkinson drug. It contains a carbinoxamine.