Nasonex is a nasal spray works by reducing swelling and irritation inside your nose, helping you breathe easier and easing sneezing, itching, and runny nose.
Nasonex is a nasal spray that contains mometasone furoate, a type of corticosteroid (steroid medicine). It works by reducing swelling and irritation inside your nose, helping you breathe easier and easing sneezing, itching, and runny nose.
What is Nasonex used for?
Hay fever (seasonal allergic rhinitis): Allergies to pollen, mould, or fungal spores at certain times of the year.
Perennial rhinitis (year-round allergies): Allergies to dust mites, animal dander, feathers, or certain foods.
Nasal polyps (adults 18+): Small growths inside the nose that cause blockage. Nasonex helps shrink them and improves breathing.
Other Medications with Nasonex
Can I use Nasonex with other medicines?
Always tell your doctor about all medicines you take.
Some medicines may increase Nasonex’s effects, especially:
HIV medicines (ritonavir, cobicistat)
Other corticosteroids (by mouth or injection)
If you switch from oral steroids to Nasonex, you may feel joint pain, weakness, depression, or develop new allergy symptoms like itchy eyes or skin rashes
Directions
How should I use Nasonex for hay fever and year-round allergies?
Adults and children 12+ years: 2 sprays in each nostril once daily. Maximum is 4 sprays per nostril per day.
Children 3–11 years: 1 spray in each nostril once daily.
How should I use Nasonex for nasal polyps?
Adults 18+ years: 2 sprays in each nostril once daily. If symptoms are not controlled after 5–6 weeks, your doctor may increase to twice daily.
Step-by-step guide:
Shake the bottle gently and remove the dust cap.
If using for the first time, press the pump 10 times until a fine mist appears (prime it). Re-prime with 2 sprays if not used for 14 days or more.
Blow your nose gently.
Close one nostril, insert nozzle into the other, and tilt your head slightly forward.
Spray once while breathing in slowly through your nose.
Breathe out through your mouth.
Repeat in the other nostril.
Clean the nozzle and replace the dust cap after use
Side Effects & Warnings
What are the common side effects?
Headache
Sneezing
Nosebleeds (more likely if you use higher doses, especially for nasal polyps)
Sore nose or throat
Small ulcers inside the nose
Respiratory tract infections
What are the rare or serious side effects?
Swelling of face, tongue, or throat
Difficulty breathing or swallowing
Severe allergic reaction (hives, wheezing)
Blurred vision or eye problems (glaucoma, cataracts)
Damage to the nasal septum (the wall between nostrils)
Warnings:
Do not use if you are allergic to mometasone or any ingredients.
Avoid use if you have untreated nose infections, recent nose surgery, or injuries until healed.
Long-term high doses may affect children’s growth – regular monitoring is advised.
If your immune system is weak, avoid contact with people who have measles or chickenpox
Ingredients
What’s in Nasonex? Each spray contains:
50 micrograms mometasone furoate (the active ingredient)
Other ingredients:
Dispersible cellulose
Glycerol
Sodium citrate
Citric acid monohydrate
Polysorbate 80
Benzalkonium chloride (0.02 mg per spray)
Purified water
Storage Information
How should I store Nasonex?
Keep out of sight and reach of children.
Store below 25°C – do not freeze.
Use within 2 months after opening. Only open one bottle at a time.
Do not use after the expiry date (last day of the month shown on the pack).
Return unused spray to a pharmacist – do not throw away in household waste