Aerius is backed by science to relieve your allergy symptoms. AERIUS® (5 mg desloratadine) is an antihistamine that delivers multi-symptom allergy relief for 24 hours. Its , long-lasting action relieves your allergy symptoms to help you do the things you like, without your allergy symptoms getting in the way. Whether it’s plants (trees, grass, pollen and ragweed) or animal dander, dust mites, or mold, indoors or outdoors, AERIUS® relieves your allergy symptoms. AERIUS® is non-drowsy so you can function normally, both at school and at work – those times when being able to be at your best really counts. Health Care professionals recommend AERIUS® for the relief of allergy symptoms.