Name  :     Promethazine hydrochlorine
Shape :     white powder

1. For all kinds of allergies (such as asthma, urticaria, etc.), vomiting during pregnancy, dizziness caused by boat, etc.

2. It can be used together with aminophylline to treat asthma.

3, mixed with pethidine to make hibernation injection, used for artificial hibernation.

               Promethazine hydrochloride is a kind of organic matter, the chemical formula is C17H20ClN2S, is a common cough antihistamine, is an antihistamine, can competitionally block the histamine H1 receptor, against the histamine-induced telangiectasis, and reduce its permeability.Therefore, it can calm down the cough caused by irritation of the trachea.