Cetirizine hydrochloride

Product Name: Cetirizine hydrochloride

CAS NO: 83881-52-1

Appearance: white powder

MF: C21H26Cl2N2O3

Usage: Treatment of itching and urticaria caused by seasonal rhinitis, perennial allergic rhinitis, allergic conjunctivitis and allergic reactions.

Description:

Cetirizine, sold under the brand name Zyrtec among others, is a potent second-generation antihistamine used in the treatment of hay fever, allergies, angioedema, and urticaria. It acts as a selective antagonist of the histamine H1 receptor.

Second-generation antihistamines like cetirizine are less able to cross the blood–brain barrier and therefore have diminished effects on the central nervous system compared to first-generation drugs. As such, they are less likely to cause drowsiness or memory impairment.