Aerius is a prescription antihistamine medication containing 5mg Desloratadine in film-coated tablet form. Manufactured by MSD, it is a long-acting, non-sedating antiallergic medication designed for once-daily dosing. The package contains 30 tablets. This medication comes in a film-coated tablet formulation for oral use. The active ingredient Desloratadine is clearly marked on the packaging at 5mg strength. The tablets are designed to be taken once daily and provide long-lasting antiallergic effects without causing drowsiness. The product is manufactured by MSD, a trusted pharmaceutical company.