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Nasonex Nasal Spray

Available in a Single, Double and Triple Pack

  • Corticosteroid nasal spray to relieve hay fever and allergy symptoms.
  • Contains mometasone furoate.
  • Always read the patient information leaflet before use.
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Faye Bonnell - Medical Content Writer
Faye Bonnell
Medical Content Writer
James O'Loan - CEO & Superintendent Pharmacist
James O'Loan
CEO & Superintendent Pharmacist

Buy Nasonex

Nasonex is a nasal spray containing the active ingredient mometasone furoate, a type of medicine called a corticosteroid. Nasonex is used to relieve hayfever and allergy symptoms (rhinitis), such as sneezing, itchy eyes and blocked or runny nose. This medicine can also be used to treat nasal polyps, small growths in the lining of the nose.

How Nasonex relieves allergy symptoms

Nasonex nasal spray contains 50mg of the active ingredient mometasone furoate in each spray. This medicine works on your immune system to reduce the inflammation that occurs in hay fever and allergic conditions, relieving symptoms such as redness, swelling and itching. The nasal spray also reduces the amount of mucus in your nose.



Firstly, shake the bottle gently and remove the dust cap. You should then gently blow your nose to clear your nostrils. Close one nostril with your finger and put the nozzle into the other and start to breathe in gently through your nose. Whilst you are breathing in, squirt a spray of the medicine into your nose by pressing down once with your fingers. Remove the nozzle and breathe out through your mouth, then wipe the nozzle with a clean tissue and replace the dust cap. 

The recommended dosage for Nasonex depends on your age and you should always follow your doctor or Chemist4U pharmacist’s advice. This information is intended as a guide only.

For the treatment of hay fever and perennial rhinitis

For adults and children over 12 years, the usual dose is two sprays into each nostril, once a day. Once your symptoms have improved, your doctor or Chemist4U pharmacist might advise you to decrease the dose. On the other hand, if your symptoms don’t feel any better at all, your dose may be increased up to a maximum of four sprays into each nostril once a day. 

For children aged 3 to 11 years, the usual dose is one spray into each nostril daily. If your child suffers particularly badly from hayfever, their doctor or Chemist4U pharmacist may suggest that your child should start using Nasonex before the start of the pollen season in order to prevent hayfever symptoms. 

For the treatment of nasal polyps

For adults over 18 years old, the usual starting dose to treat nasal polyps is two sprays into each nostril once a day. If symptoms aren’t controlled after 5 to 6 weeks, the dose can be increased to twice daily instead of once. Once the symptoms are under control, your doctor or Chemist4U pharmacist may advise you to decrease this dose. 


Side Effects

Like all medicines, there is a possibility that Nasonex may cause side effects in some people. If you experience any symptoms of an allergic reaction (swollen face, tongue or throat, trouble swallowing, hives or shortness of breath) seek medical help immediately. Common side effects include: 

  • Headache
  • Sneezing
  • Nose bleeds
  • Sore nose or throat
  • Ulcers in the nose
  • Respiratory tract infection

For more information on other possible side effects, refer to the patient information leaflet. If you experience any side effects, including any not included in the patient information leaflet, you can report them using the MHRA Yellow Card Scheme



Nasonex may not be suitable for some people with other health conditions. You shouldn’t use this medicine if: 

  • You are allergic to mometasone furoate or any of the other ingredients in this medicine.
  • You have an untreated infection in your nose, as Nasonex may worsen the infection. 
  • If you have recently had an operation on your nose or you have injured your nose.

Talk to your doctor or Chemist4U pharmacist before taking Nasonex if: 

  • You have or have ever had tuberculosis
  • You have any other infection 
  • You are taking other corticosteroid medicines, either by mouth or by injection
  • You have cystic fibrosis

Pregnancy and Breastfeeding

If you are pregnant, think you may be pregnant, are trying to become pregnant, or if you are breastfeeding, speak to your doctor or Chemist4U pharmacist for expert advice before taking Nasonex.

Age Restrictions

Nasonex is not recommended for children under the age of 3 years old. If your child is suffering from hayfever or other allergy symptoms, speak to a Chemist4U pharmacist for suitable alternatives or browse our wide range of allergy treatments. For nasal polyps, Nasonex is only suitable for treatment in adults over the age of 18 years old.


Important information

This product is a medicine; make sure to speak to your doctor or Chemist4U pharmacist before taking this product if you have an underlying medical problem or are taking any other medicine or complementary therapy. If your symptoms get worse or continue after taking this product, contact us or your doctor. For medical services in your area, please refer to

If you are pregnant, trying to become pregnant, or breastfeeding, speak to your doctor or our pharmacist before taking this product. If you suffer from any allergies, ask your doctor or our pharmacist if this medicine is right for you.

Store all medicines out of sight and reach of children.

Please read the included leaflet carefully before using this product.

Please contact your GP if appropriate regarding this product.



Keep out of sight and reach of children and store below 25°C. Do not use Nasonex after the expiry date, referring to the last day of the month stated on the packaging. Once opened, use this medicine within 2 months.

Frequently Asked Questions

What is hay fever?

Hayfever is a common allergy that usually affects people in the spring and summer when plants start to release pollen, a very fine powder that is part of the plant’s reproductive system.

The proteins in pollen can cause your nose, throat, eyes and sinuses to become swollen and inflamed.

Hay fever is usually worse between late March and September in the UK, when the pollen count is at its highest.

Symptoms of hay fever include: 

  • Sneezing and coughing
  • A runny or blocked nose
  • Itchy, red or watery eyes
  • Itchy throat, mouth, nose and ears
  • Loss of smell
  • Pain around the temples and forehead
  • Headache or earache
  • Feeling tired

If you also suffer from asthma, hay fever can also cause a tight feeling in your chest, shortness of breath or wheezing and coughing. 

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Do I need a prescription for this medication?

You do need a prescription for this medication in the UK.

Our healthcare professionals can provide prescriptions if they think this treatment would be right for you and your condition.

When you click the button which reads “Start Consultation” at the top of this page, you’ll see a short questionnaire set up by our healthcare team which is designed to help them understand your medical needs.

Just like an in-person consultation with your GP, our doctors will assess your answers to their questions and write a prescription for the treatment they think will be best for you.

You’ll then be able to pay for your medication and we’ll send it out to you quickly and in discreet packaging.

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