Medical Dictionary
promethazine
noun pro·meth·a·zine \(ˈ)prō-ˈmeth-ə-ˌzēn\
Medical Definition of PROMETHAZINE
: a crystalline antihistamine drug derived from phenothiazine and used chiefly in the form of its hydrochloride C17H20N2S·HCl—see phenergan
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