Xyzal® 24HR Allergy Relief. Original prescription strength. Levocetirizine dihydrochloride tablet 5 mg / antihistamine. Relief of: Sneezing. Runny nose. Itchy nose or throat. Itchy, watery eyes. Clinically proven relief from indoor and outdoor allergies. Clinically proven relief in 60 minutes. Clinically proven relief for 24 hours. Uses: Temporarily relieves these symptoms due to hay fever or other respiratory allergies: Runny nose. Sneezing. Itchy, watery eyes. Itching of the nose or throat. The trade dress of this Xyzal® package is subject to trademark protection. Questions and Comments Call: 1-800-633-1610. ©2017.