Avamys is an effective medicine that is designed to treat the symptoms of seasonal allergic rhinitis, or hay fever. It comes in the form of a fast-acting nasal spray and can be used to relieve: Avamys nasal spray can also be used to treat other allergies, such as those caused by pet dander or dust mites. Using this treatment on a long-term basis can help to control nasal inflammation and congestion. As well as Avamys, fluticasone furoate nasal sprays can be bought under the brand names Flixonase and Nasofan.