Levocetirizine

Specs: USP Cas No: 130018-77-8 IUPAC Name: 2-[2-[4-[(R)-(4-chlorophenyl)-phenyl-methyl] piperazin-1-yl]ethoxy]acetic acid Chemical formula: C21H25N2ClO3 Molecular Weight: 388.888 g/mol Usage Category: antihistamine/Anti-allergetic Uses: Levocetirizine dihydrochloride is a third generation non-sedative antihistamine, developed from the second generation antihistamine cetirizine. Chemically, levocetirizine is the active enantiomer of cetirizine. Levocetirizine works by blocking histamine receptors. It does not prevent the actual release of histamine from mast cells, but prevents it binding to its receptors. This in turn prevents the release of other allergy chemicals and increased blood supply to the area, and provides relief from the typical symptoms of hayfever.