Allercet Cold Tablet

USDailyMed:Levocetirizine R06AE09(WHO) UK:POM(Prescription only)US:OTC/ Rx-only 2-(2-{4-[(R)-(4-Chlorophenyl)(phenyl)methyl]piperazin-1-yl}ethoxy)acetic acid 130018-77-8N 1549000 1214 DB06282Y 1266001Y 6U5EA9RT2O D07402Yas salt:D08118Y CHEBI:94559 ChEMBL1201191N LCR (PDBe,RCSB PDB) DTXSID60156294 Interactive image Clc1ccc(cc1)[C@H](N2CCN(CCOCC(=O)O)CC2)c3ccccc3 InChI=1S/C21H25ClN2O3/c22-19-8-6-18(7-9-19)21(17-4-2-1-3-5-17)24-12-10-23(11-13-24)14-15-27-16-20(25)26/h1-9,21H,10-16H2,(H,25,26)/t21-/m1/s1YKey:ZKLPARSLTMPFCP-OAQYLSRUSA-NY Levocetirizine, sold under the brand nameXyzal, among others, is a second-generationantihistamineused for the treatment ofallergic rhinitis(hay fever) and long-termhivesof unclear cause.It is less sedating than older antihistamines.It is takenby mouth. Common side effects include sleepiness, dry mouth, cough, vomiting, and diarrhea.Use inpregnancyappears safe but has not been well studied and use whenbreastfeedingis of unclear safety.It is classified as a second-generation antihistamine and works by blockinghistamine H1-receptors. Levocetirizine was approved for medical use in the United States in 2007,and is available as ageneric medication.In 2023, it was the 158th most commonly prescribed medication in the United States, with more than 3million prescriptions.