Promethazine Hydrochloride is an antiemetic, antihistaminic, and CNS depressant. Promethazine Hydrochloride is a first generation histamine H1 receptor antagonist whose antihistamine activity. Promethazine can penetrate the CNS, depressing central H1-receptor activity, which may relate to its sedative properties, and can also inhibit muscarinic acetylcholine receptors. References: Lalfamkima F, Debnath SC, Adhyapok AK. A study of promethazine hydrochloride and pentazocine intramuscular sedation along with 2 % lidocaine hydrochloride and adrenaline and comparison to placebo along with 2 % lidocaine hydrochloride and adrenaline for surgical extraction of mandibular third molar. J Maxillofac Oral Surg. 2015 Mar;14(1):90-100. doi: 10.1007/s12663-013-0595-3. Epub 2013 Nov 30. PubMed PMID: 25729232; PubMed Central PMCID: PMC4339336.

纯度：≥98%

CAS：58-33-3