Beconase nasal spray contains the active substance beclometasone diproprionate. This medicine belongs to a group of medicines known as corticosteroids, a natural substance made by our body to control inflammation. Beconase nasal spray is used to give relief from common symptoms of seasonal hay fever such as sneezing and itchy, runny or blocked-up nose. This product is suitable for use in adults aged 18 years and over.