May treat: Asthma, Itchy skin, Inflammation, Perennial Allergic Rhinitis Drug class: Corticosteroid Uses of This Medicine Mometasone nasal spray is used to treat and prevent the symptoms (e.g., stuffy or runny nose, itching sneezing) of seasonal (short-term) and perennial (year-round) allergic rhinitis (hay fever). This medicine is also used to treat nasal polyps in adults. Mometasone belongs to the family of medicines known as corticosteroids (cortisone-like medicines). It works by preventing certain cells from releasing substances that cause an allergic reaction. Drugs and Foods to Avoid Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products. Make sure your doctor knows if you are also using ketoconazole (Nizoral®). When Not To Use You should not use this medicine if you have had an allergic reaction to mometasone or milk proteins. Do not use this medicine to treat bronchospasm or an asthma attack that has already started. Missed Dose If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses. Storage Keep the medicine in the foil pouch until you are ready to use it. Store at room temperature, away from heat and direct light. Do not freeze. Keep out of the reach of children. Do not keep outdated medicine or medicine no longer needed. Ask your healthcare professional how you should dispose of any medicine you do not use. Throw away the inhaler when the dose counter is at "00" or 45 days after you opened the package. Ask your pharmacist, doctor, or health caregiver about the best way to dispose of the used inhaler and any leftover medicine. Read More from National Library of Medicine »NOTE: Health related content found on this site is for informational/educational purposes only and is not intended for medical advice, treatment, diagnosis, or etc.