Aerius (Desloratadine) 5mg is a film-coated antiallergic tablet manufactured by Schering-Plough. Each pack contains 30 tablets. It is a once-daily, long-acting, non-sedating antihistamine medication used to treat allergy symptoms. This is a prescription medication that should be taken as directed by your healthcare provider. The film-coated tablets contain 5mg of the active ingredient desloratadine per tablet. The package contains 30 tablets for a month's supply when taken as directed at one tablet per day.