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Nasonex nasal spray

Dr Karen Martin
Reviewed by Dr Karen MartinReviewed on 19.10.2023 | 2 minutes read

Nasonex contains mometasone, a type of medicine known as a corticosteroid, and is available over-the-counter. It can prevent and treat hay fever symptoms and other airborne allergies, such as animal and dust allergies. It helps with sneezing, congestion, an itchy or runny nose, and sinus discomfort.

Doctor’s advice

How does it work?

Mometasone works by reducing inflammation in the nasal passages, the root cause of hay fever and other airborne allergy symptoms. It does this because mometasone is a manufactured version of a corticosteroid, a hormone that is produced naturally in our bodies. By having a similar structure as the corticosteroid in our bodies, it causes the same effect, in this case, reducing inflammation.

How do I use the medication?

Initially, you should use two sprays into each nostril once a day. Dosing for children 2 to 11 years is one spray into each nostril once a day. For adults, you can try reducing the dose to one spray into each nostril once a day when your symptoms are under control. Try to use the lowest dose possible to control your symptoms. It is best to use the medicine daily to stop your symptoms before they occur.

You should speak with your doctor before using the medicine for longer than 3 months or if your symptoms do not start to improve after 14 days of use.

Who should not use the medication?

Do not use Nasonex if you are allergic to mometasone or another ingredient listed in the medicine. Unless prescribed by a doctor, anyone under 2 years should not use Nasonex.

Speak with your doctor or pharmacist before using Nasonex if you are pregnant or breastfeeding, have a weakened immune system, have or have previously had tuberculosis, have any other infection, have cystic fibrosis, or have any problems with your nose, such as an injury, infection, ulcers, or recent surgery.

Mometasone can interact with other medications, such as some HIV medications and other corticosteroids. If you take any prescription, over-the-counter or herbal medicines, ask your doctor or pharmacist to check if they are safe to take alongside Nasonex.

Are there any side effects?

As with all medications, some people may experience side effects. Some common ones can include nose bleeds, headaches, sneezing, respiratory infections, and soreness in your nose or throat. Seek urgent medical advice if you develop any problems with your eyes, such as blurred vision, cloudy vision, eye pain, or loss of vision. You should speak with your doctor or pharmacist if you are concerned about any side effects.

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Dr Karen Martin
Reviewed by Dr Karen Martin
Reviewed on 19.10.2023
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