| Product name | Levocetirizine dihydrochloride |
| Cas No. | 130018-87-0 |
| Molecular Formula | C 21 H 27 Cl 3 N 2 O 3 |
| Appearance | White powder |
Levocetirizine dihydrochloride ((R)-Cetirizine dihydrochloride) is a third-generation peripheral H1-receptor antagonist. Levocetirizine dihydrochloride is an antihistaminic agent which is the R-enantiomer of Cetirizine. Levocetirizine dihydrochloride has a higher affinity for the histamine H1-receptor than (S)-Cetirizine and can effectively treat allergic rhinitis and chronic idiopathic urticaria.