"Xyzal Allergy 24HR Tablets are designed to provide continuous 24-hour, full prescription strength relief of your worst allergy symptoms. Due to the active ingredient, levocetirizine dihydrochloride 5mg, this allergy medication provides all night, all day relief of sneezing, runny nose, itchy, watery eyes, and itchy nose or throat. Xyzal Allergy 24HR starts working in an hour to ease your allergy symptoms as you rest. Allergy-symptom relief allows you a better quality of sleep throughout the...