Synonyms: Levocetirizine Dihydrochloride, Acetic acid, 2-[2-[4-[(R)-(4-chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy]-, hydrochloride (1:2), Acetic acid, [2-[4-[(4-chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy]-, dihydrochloride, (R)-, Acetic acid, [2-[4-[(R)-(4-chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy]-, dihydrochloride (9CI), (R)-(-)-Cetirizine hydrochloride, (R)-Cetirizine dihydrochloride, Allear, Allercet, Levocetirizine dihydrochloride, Lezyncet, UCB 28556, Xusal, Xyzal, Xyzall