Asmanex, illustration of inhaler form (not a photo of the actual pack)

Illustrative image.

Asmanex

Mometasone Furoate

Prescription required

$546.00

100mcg · 6 × 1 inhaler · 3 months supply

BrandBranded medicine

$182.00 per month

Strength

How long a supply?

1 month$182.00 a month
3 months$182.00 a month
6 months$182.00 a month
Supplied from Canada

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Annual cost

$2184a year at this pack size

Prescription required

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100mcg

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About Asmanex

Overview

Asmanex contains mometasone furoate, an inhaled corticosteroid used for the ongoing maintenance treatment of asthma in adults and children aged 4 years and older. It helps reduce inflammation in the airways, which contributes to asthma symptoms. It does not provide immediate relief and is not intended to treat sudden asthma attacks.

What it treats

- Maintenance treatment of asthma in adults and children aged 4 years and older. Not for relief of sudden airway tightening (acute bronchospasm).

Safety information

Side effects

Common side effects include headache, nasal allergies, sore throat, upper respiratory tract infections, sinusitis, oral thrush (a fungal infection in the mouth), painful periods, muscle and joint pain, back pain, and indigestion. Rinse your mouth with water after use and spit it out without swallowing to help reduce the risk of thrush. Stop using Asmanex and seek immediate medical help if you develop a severe allergic reaction, including swelling or difficulty breathing, or sudden wheezing or breathing difficulty immediately after inhalation. Itching and rash can also indicate an allergic reaction. Contact your doctor if you develop signs of infection, symptoms in your mouth or throat, or changes in vision. Asmanex can worsen existing infections, and chickenpox or measles can be serious or fatal in susceptible people. Other serious risks include reduced adrenal gland function, excess corticosteroid effects, reduced bone mineral density, slowed growth in children, glaucoma and cataracts. Adrenal problems are a particular concern when switching from oral steroids to an inhaled corticosteroid. Seek immediate medical review if your asthma worsens rapidly. Asmanex does not relieve an acute asthma attack.

When to call your doctor

- Seek immediate medical attention if your asthma symptoms worsen quickly. - Get help immediately for sudden wheezing or difficulty breathing after using Asmanex. - Seek immediate medical attention for signs of an allergic reaction, such as swelling, itching or a rash.

If symptoms are severe or getting worse quickly, seek emergency care rather than waiting.

Before taking this medicine

Do not use Asmanex if you are allergic to milk proteins or any of its ingredients. It must not be used to treat a severe asthma attack requiring intensive treatment and is not for relief of sudden asthma symptoms. Rapidly worsening asthma needs immediate medical reassessment. Tell your prescriber if you have tuberculosis, a fungal, bacterial, viral or parasitic infection, or herpes simplex affecting the eye. Asmanex may worsen these infections. Chickenpox or measles can be more serious or even fatal in susceptible people. Extra caution and monitoring may be needed if you are switching from oral steroids, have risk factors for low bone mineral density, or use Asmanex long term. It may impair adrenal function, cause excess corticosteroid effects, reduce bone mineral density, slow growth in children, or cause glaucoma or cataracts. Children’s growth should be monitored, and eye symptoms may require assessment by an eye specialist. Tell your prescriber if you take ritonavir or another strong CYP3A4 inhibitor, as these may increase corticosteroid effects throughout the body. Asmanex can cause thrush in the mouth or throat. Rinse your mouth with water after use and spit it out without swallowing. Stop using Asmanex and seek immediate medical help if an allergic reaction occurs. Sudden worsening of breathing immediately after use requires prompt treatment with a fast-acting inhaled bronchodilator and stopping Asmanex.

Interactions

Tell your doctor if you take ritonavir or another medicine that strongly blocks the enzyme CYP3A4. These medicines may increase mometasone’s corticosteroid effects throughout the body, so they should be used together with caution. In clinical studies, using Asmanex with other medicines commonly used to treat asthma was not associated with unusual adverse reactions.

Using Asmanex

Dosing

Dosing is set by your prescriber. Each health care professional may prescribe medication differently according to a patient's medical history and condition, so follow the directions on your prescription label and speak to your doctor or pharmacist before changing anything.

Storage

Store below 25°C away from direct heat and sunlight. Do not pierce or burn the device, even when it is empty. Keep all medicines out of the sight and reach of children.

Clinical information on this page is summarised from the US FDA label ASMANEX (MOMETASONE FUROATE) INHALANT [ORGANON LLC] (DailyMed, retrieved 19 September 2026).

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