Save on Xyzal® products with this printable coupon — accepted at participating retailers. Explore Xyzal® online retailers and sellers near you to find all-night, all-day allergy symptom relief. Xyzal® provides 24 hours of continuous all-night, all-day relief from tough allergy symptoms such as sneezing, itchy eyes, watery eyes, runny nose, itchy nose, and itchy throat. So you can put your tough allergies to bed for a more productive day.