• Provides powerful relief from sneezing, congestion, itching, and runny nose
  • Works directly in the nose to reduce inflammation at the source
  • Effective for both seasonal hay fever and year-round allergies

How it works?

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Overview

Hayfever and allergies can leave you blocked, tired, and frustrated — but you don’t need to suffer in silence. Mometasone nasal spray is a trusted, non-drowsy steroid treatment that targets inflammation at its source, easing congestion, sneezing, and irritation for clear, all-day relief. As the reliable generic version of Nasonex, it offers the same proven protection, helping you breathe freely and feel like yourself again.

This medicine requires a secure online consultation with a UK-registered prescriber, and will only be supplied if clinically appropriate.


What is Mometasone


Mometasone furoate nasal spray is a corticosteroid treatment used to relieve symptoms of hay fever (allergic rhinitis) and year-round allergies (perennial rhinitis). By reducing swelling and inflammation inside the nasal passages, it works directly at the source of symptoms to ease congestion, runny nose, itching, and sneezing.

A single once-daily dose provides 24-hour relief, making it convenient and easy to use. Because it is a non-drowsy formula, it’s suitable for everyday use without affecting alertness or concentration.

Clinically proven to be as effective as Nasonex, mometasone furoate offers trusted, long-lasting relief to help you stay comfortable throughout allergy season and beyond.

Directions

  • Standard adult dose: Two sprays in each nostril once daily
  • Your prescriber may reduce to one spray per nostril once daily once symptoms are controlled
  • Shake the bottle gently before each use
  • Prime the spray before first use, or if unused for several days


Always follow the instructions provided by your prescriber.

Side Effects

Like all medicines, mometasone furoate nasal spray can cause side effects, although not everyone will experience them. Most are mild, short-lived, and improve as your body adjusts to treatment.

Common (may affect up to 1 in 10 people):

  • Nosebleeds – usually mild and temporary, more likely with prolonged use.
  • Headache – typically mild and short-lived, relieved with rest or simple pain relief if needed.
  • Irritation, dryness, or soreness in the nose or throat – some people may notice a stinging, burning, or uncomfortable feeling, which often settles with regular use.


Less common (may affect up to 1 in 100 people):

  • Altered sense of taste or smell – some people may notice temporary changes, which usually improve with time.
  • Throat irritation – mild discomfort or soreness may occur but often improves with continued use.
  • Sneezing after application – this is usually mild and short-lived.


Rare but serious (seek urgent medical advice):

  • Severe allergic reaction (anaphylaxis) – symptoms may include swelling of the face, lips, tongue, or throat, difficulty breathing, or a sudden rash. This is very rare but requires immediate medical help.
  • Eye pain or changes in vision – may indicate raised pressure in the eye; seek prompt medical assessment if this occurs.


Most people tolerate mometasone nasal spray well, and side effects (if they do occur) are generally mild. If you are concerned about any symptoms, or they do not improve, speak to your doctor, pharmacist, or prescriber.

Disclaimer: This is not a complete list of side effects. Always read the patient information leaflet provided with your medicine for full details. If you experience severe or worrying symptoms, seek medical advice straight away. In an emergency, call 999 or go to A&E.

Warnings

Mometasone nasal spray may not be suitable if you:

  • Are allergic to mometasone or any spray ingredients
  • Have frequent or unexplained nosebleeds
  • Have untreated infections in the nose or sinuses
  • Are pregnant or breastfeeding (only use if advised by your prescriber)
  • Are using other steroid medicines (increased risk of side effects)
Frequently asked questions

  • What is mometasone nasal spray and what is it used for?

    Mometasone nasal spray is a corticosteroid used to treat hay fever, allergic rhinitis and nasal congestion caused by allergies. It reduces inflammation inside the nose, helping relieve sneezing, itching, blocked nose and runny nose. It is often used when antihistamines alone are not enough.

  • How does mometasone relieve hay fever and allergy symptoms?

    Mometasone works by reducing swelling and irritation in the nasal passages. This helps relieve congestion, sneezing, itching and a runny nose. It treats the underlying inflammation that causes hay fever symptoms rather than just blocking histamine.

  • How long does mometasone take to start working?

    Some people notice improvement within 12 hours, but it can take a few days to reach full effect. Using it daily gives the best results, especially during peak pollen periods.

  • How do I use mometasone nasal spray correctly?

    Shake the bottle, blow your nose gently, then spray into each nostril while aiming slightly outward and not at the middle of your nose. Avoid sniffing hard afterwards. Proper technique helps reduce irritation and improves effectiveness.

  • Is mometasone stronger than standard antihistamines?

    Mometasone works differently by treating inflammation inside the nose rather than blocking histamine. It is often more effective for congestion and blocked nose, while antihistamines help more with itching and sneezing. Many people use both for full relief.

  • Who should avoid mometasone nasal spray?

    You should speak to a clinician before using mometasone if you have recent nose surgery, frequent nosebleeds, untreated infections or are taking other steroid medicines. Children and people with ongoing health problems may need tailored advice.

  • Can I use mometasone with antihistamines or other allergy treatments?

    Yes. Many people use mometasone alongside oral antihistamines or allergy eye drops, especially during peak pollen seasons. This combination often provides the strongest relief for nasal symptoms.

  • Why is mometasone recommended for blocked or congested noses?

    Mometasone reduces swelling inside the nasal passages, which is the main cause of congestion during allergic reactions. It helps open the airways, making it easier to breathe through your nose and improving sleep and daytime comfort.

  • Can mometasone help with sinus pressure or postnasal drip?

    Yes. By reducing inflammation, mometasone can ease sinus pressure, reduce mucus build-up and improve postnasal drip. This makes it useful for people who get sinus-related symptoms during pollen season.

  • Does mometasone cause dryness, irritation or nosebleeds?

    Some people notice mild dryness or slight irritation at first. Nosebleeds can occur if the spray is directed at the middle of the nose instead of outward. Correct technique and regular moisturising with saline sprays usually help reduce this.

  • Can I use mometasone every day during allergy season?

    Yes. Daily use during pollen season is recommended for the best control, as mometasone works gradually. Many people use it through spring and summer, then stop once symptoms settle.

  • Is mometasone safe long term?

    Yes. Mometasone is safe for long-term seasonal use when taken as directed. Only tiny amounts enter the bloodstream, making it much safer than oral steroids. Your clinician can review treatment if you need it year-round.

  • Can I use mometasone if I have asthma or eczema?

    Yes. Many people with asthma or eczema use mometasone for seasonal allergies. It helps reduce the nasal inflammation that can trigger breathing or skin flare-ups, especially during high-pollen days.

  • What should I do if I forget a dose?

    If you forget a dose, use it as soon as you remember unless it is nearly time for your next dose. Do not double up. Consistency is important for good allergy control, so try to take it at the same time each day.

  • Can mometasone be used for non-allergy nasal congestion?

    Yes. Mometasone may help with congestion linked to sinusitis or nasal inflammation not caused by allergies. It won’t relieve symptoms caused by a cold immediately but may reduce inflammation over several days.