Aerius 5mg TabletsAerius 5mg Tablets are a long acting, non drowsy antihistamine medication containing desloratadine as the active ingredient. It provides continuous 24 hour relief from a wide spectrum of allergy symptoms without causing significant sedation. Primary Uses Aerius is clinically indicated to manage symptoms associated with two main allergic conditions: Allergic Rhinitis (including Hay Fever): Relieves nasal congestion, sneezing, runny or itchy nose,