For tough allergy symptoms, Allegra 24-Hour Adult Non-Drowsy Antihistamine Tablets are fast*, non-drowsy, and lasts 24 hours to help you relieve your worst allergy symptoms. Round-the-Clock Relief Allegra tablets start working in one hour to give you round-the-clock relief from sneezing, runny nose, itchy and watery eyes, and itchy nose or throat. One allergy pill is all you need for 24-hour relief from allergy symptoms with full prescription strength available over the counter. Relief Without the Drowsiness Formulated with active ingredient fexofenadine HCI, Allegra Non-Drowsy Allergy Medicine provides powerful relief from indoor and...