Get fast-acting relief from tough allergy symptoms like a runny nose, sneezing, itchy, watery eyes and itchy nose or throat. Allegra® kicks in within just one hour with 0% brain interference for non-drowsy allergy relief - that's right, it doesn't cross your blood-brain barrier and leave you feeling sleepy. That's why it's the #1 allergist-recommended non-drowsy allergy brand*.