What it is used for
- Hay fever and persistent allergic rhinitis — nasal spray form
- Nasal congestion, sneezing, itching, and runny nose from allergy
- Nasal polyps (in some cases)
- Asthma (regular prevention) — inhaler form
How it works
Mometasone is a steroid that reduces inflammation in the lining of the nose or the airways. Used regularly, it calms swelling and sensitivity, easing nasal allergy symptoms or helping prevent asthma symptoms.
How it is taken
Available as a nasal spray for allergies and an inhaler (preventer) for asthma. Both are used regularly rather than for instant relief. Use it exactly as your doctor, nurse, or pharmacist directs. With the nasal spray, aim away from the central wall of the nose to reduce irritation.
No doses here on purpose. The right strength and schedule depend on you — only a doctor or pharmacist should set them. Always follow your prescription and the label.
Common side effects
- Dry or irritated nose, mild nosebleeds (nasal spray)
- Headache
- Sore throat
- Nasal stinging or burning
- Oral thrush or hoarseness (inhaler)
Serious effects — get help
- Repeated or heavy nosebleeds, or a sore inside the nose that will not heal
- Signs of a severe allergic reaction (swelling, breathing difficulty)
- Eye problems such as blurred vision (rare, with long-term use)
- Symptoms of adrenal effects with high long-term doses
If a reaction is severe — for example trouble breathing, swelling of the face or throat, or collapse — go to the nearest emergency room now or call your local emergency number. Do not wait for an online consultation.
Interactions to watch
- Certain antifungal and some HIV medicines that can raise steroid levels
- Other steroid medicines
- Tell your clinician about all your medicines
Who should take care
- Tell your clinician if you are pregnant, planning pregnancy, or breastfeeding
- Use it regularly as prescribed for it to work, even when symptoms are mild
- Aim the nasal spray correctly to reduce nosebleeds and irritation
- Rinse your mouth after inhaler use
- Tell any clinician you use a nasal or inhaled steroid