Introduction

Promethazine hydrochloride occurs as a white to faint yellow, practically odorless, crystalline powder which slowly oxidizes and turns blue on prolonged exposure to air. It is soluble in water and freely soluble in alcohol. Promethazine hydrochloride : Promethazine hcl;Promethazine hydrochloride, Phenergan; 10-(2-Dimethylamino-1-propyl)phenothiazine hydrochloride

Function

1.for a variety of allergies (such as asthma, urticaria, etc.), pregnancy vomiting, ship and other vertigo caused by boat. 2.can be combined with aminophylline for treatment of asthma. 3.with piperidine and other hibernation injection, used for artificial hibernation.