hydrochloride
(proh-METH-ah-zeen hy-droh-KLOR-eyed) Phenergan Phenothiazine Antiemetic Sedative-hypnotic pH 4 to 5.5 Usual dose A vesicant; see Dilution, Rate of Administration, Contraindications, Precautions, Monitor, and Antidote. Deep IM injection is the preferred route…