Momate AZ Nasal SprayMometasone nasal spray is used to prevent and relieve symptoms of sneezing, runny, stuffy, or itchy nose caused by hay fever or other allergies. It is also used to treat nasal polyps (swelling of the lining of the nose). Mometasone nasal spray should not be used to treat symptoms (e. g., sneezing, stuffy, runny, itchy nose) caused by the common cold. Mometasone nasal spray is in a class of medications called corticosteroids. It works by blocking the