Find rapid relief with Xyzal, which starts working in one hour – and it keeps working for 24 hours.
Xyzal Allergy 24HR Allergy Relief, 5mg Levocetirizine Dihydrochloride, 35 ct | CVS Enter Xyzal Allergy Tablets, 24-Hour Allergy Relief, Original Prescription Strength, 35-Count. That's right – Xyzal is as effective at hour 24 as it is at hour 1.Xyzal is a prescription strength allergy medicine that relieves symptoms of indoor and outdoor allergies, including sneezing; itchy, watery eyes; runny nose; itchy nose or throat. Enjoy the life you've dreamed of – free from the misery of allergy symptoms.