This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.
Mometasone is a medicine used to treat asthma.
It's called a preventer inhaler because it helps prevent you from getting symptoms. It comes as a twisthaler type of inhaler.
Some inhalers contain mometasone mixed with other medicines that help your breathing (bronchodilators). They are Breezehalers which are a different type of inhaler (brand names Atectura and Enerzair).
Mometasone is a type of medicine known as a steroid (or corticosteroid). Steroids closely copy the effects of natural hormones produced in your adrenal glands. They're not the same as anabolic steroids.
Mometasone inhalers are only available on prescription.
Mometasone also comes as:
- a cream, ointment or scalp lotion for eczema and psoriasis
- a nose spray (nasal spray) for allergic rhinitis, hay fever and nasal polyps
View the original NHS website page ↗. Refreshed 19 August 2026.
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