Allegra 12 Hour Allergy Relief Medicine Tablets - Fexofenadine Hydrochloride - 24ct Expiration Date of 12/2026 For your allergy symptoms, nothing works faster* than Allegra Adult 12-Hour Allergy Relief Tablet. Allegra allergy relief medicine starts 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 pill provides 12-hours of allergy relief that doesn?t make you drowsy and affect your normal brain function. Take up to two pills daily for a full day of symptom relief. Each tablet is formulated with active ingredient fexofenadine to provide powerful relief from outdoor and indoor allergens like pollen, ragweed, grass, trees, dust, mold, and pet dander. Stock up on Allegra 12-Hour Tablets for fast*, effective allergy relief. *Starts working in one hour. (description exceeds maximum possible length)