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Asmanex HFA (Mometasone)

Prescription requiredOnly Available By Prescription
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What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.


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Asmanex HFA is an asthma maintenance inhaler available by prescription and used to reduce the frequency and severity of asthma attacks. Mometasone is a corticosteroid drug that works by limiting the inflammation that causes swelling of the airways into the lungs. This means these airways are less constricted when an asthma attack does occur, and the individual does not experience breathing difficulties or wheezing to the same extent. Buy Asmanex HFA from Canada and Canpharm and get the lowest Asmanex HFA cost.

What is Asthma?

Asthma is a lung and pulmonary health disorder where inflammation causes the airways into the lungs to become constricted and limiting the airflow into the lungs for breathing as a result. Symptoms can include shortness of breath, wheezing, and cough. The disorder is manageable, and most sufferers will not have to go for medical attention when having an asthma attack, but for some it may be required based on the severity of their asthma.

Fact Table
Formula C22H28Cl2O4
License FDA Approved
Bioavailability Not applicable (inhalation use)
Legal status Prescription only
Chemical Name Mometasone
Elimination half-life Approximately 5.8 hours
Dosage (Strength) Inhalation aerosol: 100 mcg or 200 mcg per actuation
Pregnancy advice Category C (Risk not ruled out)
Brands Asmanex HFA, Asmanex Twisthaler
Protein binding Greater than 98%
PubChem CID 441336
MedlinePlus a608035
ATC code R01AD09, D07AC13, R03BA07
DrugBank DB00764
KEGG D08267
Routes of administration Inhalation

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Standard dosage for the Asmanex HFA 200mcg inhaler is 2 inhalations daily, in the morning and evening and ideally spaced 12 hours apart

Dosage may vary and you should always take your medication exactly as indicated in your prescription

If dosage indicated two puffs at one inhalation, you should wait at least 1 minute between them


The active ingredient in Asmanex HFA is Mometasone.


Let your doctor know of any history of herpes or tuberculosis infections, osteoporosis or other bone loss disorders, or eye problems like cataracts or glaucoma before starting on Asmanex HFA

Immediately tell your doctor if you lose a significant amount of weight after starting to use this maintenance inhaler

Use of this medication may conceal signs of infection, may make your more likely to get infections, or make current infections worsen

Children should only stay on the Asmanex HFA 200mcg inhaler for an extended period of time if approved by a doctor because long-term use may slow growth

Be aware of medication expiry date


Negative drug interactions may occur between Mometasone and other Rx medications, including albuterol, amlodipine, aspirin, atorvastatin, cetirizine, cyclobenzaprine, duloxetine, fluticasone, furosemide, gabapentin, hushart, levothyroxine, lisinopril, melatonin, metformin, montelukast, omeprazole, pantoprazole, prednisone, simvastatin, montelukast, tiotropium, levothyroxine, tramadol, trazodone, and cetirizine.

Let your doctor know of all medications you are currently taking before getting a prescription and proceeding to buy Asmanex HFA online.

Side Effects

Asmanex side effects may occur, and some users may experience dry or irritated throat, hoarseness, or coughing. If side effects are experienced, you may want to stop use and meet with a doctor again to discuss asthma maintenance inhaler alternatives.

Remember, these are not exhaustive lists, and it's important to consult with a healthcare professional for personalized advice and guidance. If you prefer, you may contact the U.S. Food and Drug Administration (FDA) directly. Visit or call 1-800-FDA-1088

Frequently Asked Questions about Asmanex HFA

Is Asmanex HFA a rescue inhaler?

No, this is an asthma maintenance inhaler and it cannot be used for relief from an asthma attack as it happens.

Is Asmanex HFA a steroid?

Yes, the active ingredient in the medication (Mometasone) is a corticosteroid class drug.

What is the difference between Asmanex Twisthaler and Asmanex HFA?

The only difference is that the Twisthaler has a different dose administration method.

Can Asmanex HFA cause high blood pressure?

Use of an asthma maintenance inhaler should not cause a person’s blood pressure to rise. If you are experiencing hypertension while using this asthma inhaler, you will need to speak to your doctor.

How many puffs in an Asmanex HFA inhaler?

The number of doses in an Asmanex inhaler will be indicated on the dose counter found on the side of the inhaler. There will be 120 puffs as metered actuations in an unused Asmanex HFA inhaler.

IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.