Asmanex (Mometasone Furoate)

Name: Asmanex
Brand: Merck
SKU: 6175
Availability: InStock

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

Type:

Product: Asmanex Twisthaler

Manufacturer: Merck

Country: Canada

Dosage: 100 mcg/30 dose

Qty-Price (USD):

Type:

Product: Asmanex Twishaler

Manufacturer: Merck

Country: Canada

Dosage: 200 mcg/60 dose

Qty-Price (USD):

Type:

Product: Asmanex Twisthaler

Manufacturer: Merck

Country: Canada

Dosage: 200 mcg/60 dose

Qty-Price (USD):

Type:

Product: Asmanex Twisthaler

Manufacturer: MSD

Country: United Kingdom

Dosage: 200 mcg/60 dose

Qty-Price (USD):

Type:

Product: Asmanex Twishaler

Manufacturer: Merck

Country: Canada

Dosage: 400 mcg/60 dose

Qty-Price (USD):

Type:

Product: Asmanex Twisthaler

Manufacturer: MSD

Country: United Kingdom

Dosage: 400 mcg/30 dose

Qty-Price (USD):

Generic Equivalent of Asmanex

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

There is no generic product of Asmanex.

Asmanex Information

medically reviewed by Dr. HaVy Ngo, Pharmacist on September 3, 2025.

Asmanex at CanadaPharmacyOnline.com

The brand Asmanex is manufactured and marketed by Organon (a company spun off from Merck) in Canada. It is also distributed by MSD in the United Kingdom.

Generic mometasone furoate is currently unavailable (at this pharmacy).

Dosage

Asmanex is available as a Twisthaler, a dry powder inhaler, typically supplied in 60-dose devices. It comes in strengths of 200 mcg (micrograms) and 400 mcg (micrograms) of mometasone furoate.

Your doctor will determine the appropriate dose based on your individual needs and medical history.

Usage

Asmanex (mometasone furoate) is a prescription medication used as a maintenance treatment for the prevention and control of asthma symptoms. It is not a rescue inhaler and should not be used to treat sudden, severe symptoms or acute asthma attacks. Common uses include:
• Maintenance Treatment of Asthma: Used for the long-term control of asthma symptoms and prevention of asthma attacks in patients 4 years of age and older (Twisthaler) or 5 years of age and older (HFA).

Mechanism of Action
Asmanex (mometasone furoate) is an inhaled corticosteroid that primarily exerts its therapeutic effects through anti-inflammatory action. Mometasone furoate diffuses across cell membranes and binds to glucocorticoid receptors in the cytoplasm. This binding leads to conformational changes in the receptor, which then move into the nucleus. Within the nucleus, the receptor-ligand complex regulates gene expression, increasing the production of anti-inflammatory proteins and suppressing the expression of pro-inflammatory mediators, including cytokines, leukotrienes, and histamine. This reduction in inflammation in the airways helps to decrease the hyperresponsiveness of the bronchi and reduce the frequency and severity of asthma symptoms.

Take Asmanex exactly as your doctor prescribes, following the instructions in the product monograph in Canada. Consult your doctor for personalized guidance and safe use.

The information below summarizes some, but not all, potential side effects, risks, and interactions. Before taking Asmanex, it is essential to discuss all possible side effects, risks, and interactions with your doctor or pharmacist.

Side Effects

The information below is a partial list of side effects; individual reactions can vary. Before starting Asmanex, it is crucial to discuss potential side effects and risks with your doctor or pharmacist.

Common Side Effects - The following are some common side effects of Asmanex; other side effects may also occur. Contact your doctor promptly if any side effects persist, worsen, or concern you, or if you experience any other concerning symptoms.
• Allergy symptoms (e.g., sneezing, itchy nose, watery or itchy eyes)
• Back pain
• Bronchitis
• Cold-like symptoms
• Cough
• Dry mouth or throat
• Fatigue
• Headache
• Hoarseness or deepened voice
• Indigestion/Upset stomach
• Influenza (flu-like symptoms)
• Joint pain
• Menstrual pain/Increased abdominal or stomach pain and cramping during menstrual periods
• Muscle pain or stiffness
• Nasal burning and irritation
• Nasopharyngitis (cold symptoms affecting the nose and throat)
• Nausea
• Oral thrush (yeast infection in the mouth or throat, typically white patches)
• Runny or stuffy nose
• Sinusitis (sinus infection)
• Sore throat
• Vomiting

Serious Side Effects - These are rare but potentially severe side effects. Seek immediate medical attention or call emergency services if you experience any of the following:
• Adrenal insufficiency/Systemic Corticosteroid Effects: Symptoms include extreme tiredness or exhaustion, weakness, nausea, vomiting, dizziness, or feeling faint. This can occur when transferring from oral corticosteroids or with long-term use of high doses, potentially leading to Cushing's syndrome features (e.g., rounded face, hump between shoulders).
• Allergic reactions: Severe rash, hives, swelling of the face, lips, tongue, or throat, difficulty breathing, wheezing, itching. (Note: Asmanex Twisthaler contains small amounts of lactose, which contains trace levels of milk proteins. Anaphylactic reactions in patients with milk protein allergy have been reported.) • Bone mineral density (BMD) decrease: The long-term use of inhaled corticosteroids may lead to a reduction in bone mineral density, thereby increasing the risk of osteoporosis and fractures.
• Cataracts or Glaucoma: Increased pressure in the eye or blurred vision.
• Growth Suppression in Children: Inhaled corticosteroids may cause a reduction in growth velocity in pediatric patients. Growth should be monitored routinely.
• Immune system effects/Increased susceptibility to infections: Worsening of existing infections (e.g., tuberculosis, fungal, bacterial, viral, or parasitic infections; ocular herpes simplex). Chickenpox and measles can be more serious or fatal in susceptible individuals.
• Paradoxical bronchospasm: Sudden worsening of breathing, wheezing, chest pain or tightness, or cough immediately after using the inhaler. Discontinue use and seek medical attention.
• Worsening asthma symptoms or sudden asthma attacks: If asthma symptoms worsen quickly or do not improve after 1-2 weeks of regular use.

Contraindications

The following is not an exhaustive list of contraindications. Before starting Asmanex, it is crucial to discuss all your medical conditions, past and present, and all medications you are taking with your doctor or pharmacist.

Asmanex should not be used if:
• You are experiencing acute bronchospasm or acute episodes of asthma requiring intensive measures. Asmanex is not a rescue inhaler.
• You are allergic to mometasone furoate or any other ingredient in Asmanex.
• You have a known hypersensitivity to milk proteins (specifically for Asmanex Twisthaler, as it contains lactose with trace milk proteins).
• You have untreated systemic fungal, bacterial, viral, or parasitic infections, active or quiescent tuberculous disease of the respiratory tract, or ocular herpes simplex.

Tell your doctor about all of your medical conditions, past and present, before starting Asmanex. This is crucial because certain conditions affect whether Asmanex is right for you. These conditions may include, but are not limited to:
• Cataracts or glaucoma (or a family history)
• Diabetes
• Eye infections (especially ocular herpes simplex)
• Immune system problems
• Infections (tuberculosis, fungal, bacterial, viral, or parasitic)
• Liver problems/Liver impairment
• Osteoporosis or other bone mineral density issues
• Recent nasal surgery or injury (for nasal formulations, but generally relevant for inhaled if severe local effects occur).
• If you are switching from oral corticosteroids (requires careful monitoring and gradual tapering).

Drug Interactions

Before taking Asmanex, it is essential to discuss all potential risks and interactions with your healthcare provider, such as your doctor or pharmacist. For complete and up-to-date information, please visit the highlights of prescribing information from Organon at https://www.organon.com/product/usa/pi_circulars/a/asmanex/asmanex_hfa_pi.pdf.

Provide your doctor with a complete list of all your medications, including prescriptions, over-the-counter (OTC) drugs, vitamins, and herbal supplements. It is also essential to inform your doctor about any herbal teas, recreational drugs, or significant dietary changes you are making, as these could potentially interact with Asmanex. Asmanex may interact with other medicines, but is not limited to:
• Strong Cytochrome P450 3A4 (CYP3A4) inhibitors: These medications can significantly increase the systemic exposure to mometasone furoate, potentially leading to increased corticosteroid side effects. Examples include:
o Antifungal medicines (e.g., itraconazole, ketoconazole)
o Certain antibiotics (e.g., clarithromycin, telithromycin)
o Certain HIV/AIDS antiviral medicines (e.g., atazanavir, cobicistat, indinavir, nelfinavir, ritonavir, saquinavir)
o Nefazodone (an antidepressant)

Pregnancy and Breastfeeding

It is generally considered safe to use mometasone inhalers during pregnancy, as very little of the medication gets into the bloodstream and to the baby. It is essential to continue using your Asmanex during pregnancy to maintain reasonable asthma control, as uncontrolled asthma can pose risks to both the mother and the baby. If you are pregnant or planning to become pregnant, discuss this with your doctor. It is considered safe to use mometasone inhalers during breastfeeding.

While there is limited information on mometasone transfer into breast milk, it is not expected to pass in significant amounts or cause harm to the infant due to low systemic absorption. If you have any concerns about your baby's feeding or well-being, consult your health visitor, midwife, pharmacist, or doctor.

Use in the Elderly

To date, no studies have demonstrated any geriatric-specific problems that would limit the usefulness of mometasone in older individuals. However, elderly patients may be more susceptible to conditions like osteoporosis, and patients with liver disease should use Asmanex with caution due to slower drug removal from the body.

Use in Children

Asmanex Twisthaler is approved for the maintenance treatment of asthma in patients 4 years of age and older. Asmanex HFA is approved for the maintenance treatment of asthma in patients 5 years of age and older. Asmanex is not indicated for the relief of acute bronchospasm or in children younger than the approved age ranges. Inhaled corticosteroids, including Asmanex, may cause a reduction in growth velocity in pediatric patients. Growth should be monitored routinely in children receiving Asmanex. The lowest effective dose should be used to minimize systemic effects. Children should be closely monitored for signs of infection, especially if they have been exposed to chickenpox or measles, as these conditions can be particularly severe in young children.

Frequently Asked Questions about Asmanex at Canada Pharmacy Online:

Why is Asmanex more affordable in Canada than in the United States?

Prescription drug prices, including Asmanex, are generally lower in Canada than in the US due to a combination of factors, primarily government price regulations, differing market dynamics, and other economic considerations. In Canada, provincial and federal governments negotiate drug prices with pharmaceutical companies, which often results in lower costs compared to the US, where market forces play a more significant role. For more information, see the FAQs on Prescription Drug Importation from the Kaiser Family Foundation (KFF): https://www.kff.org/health-costs/issue-brief/faqs-on-prescription-drug-importation/.

How much is the shipping?

Our shipping fee is a flat rate of $10.00 per order. Our pharmacy is committed to offering you the lowest prices on high-quality products.

How do I place an order with your pharmacy?

Ordering from us is very simple. You can purchase online or call Customer Service at 1866.920.3784; for more information or to learn about the ordering process, visit our How to Order page.

Is there a limit on the number of tablets I can order at one time?

CanadaPharmacyOnline.com can only dispense a maximum of a three-month supply of Asmanex at a time, as per your doctor's prescription.

Can I buy over the counter from you?

No, Asmanex requires a valid prescription from your doctor. We do not sell this product without a valid prescription.

Do you ship to the United States?

Yes, we do. It usually takes 7 to 18 business days to receive your order from our pharmacy.

What is the best time to take Asmanex?

Asmanex is typically administered once or twice daily, as prescribed by your doctor. It is essential to use it regularly and continuously to maintain its beneficial effects. For the Twisthaler, if administered once daily, it should be taken in the evening. For the HFA inhaler, it's typically two inhalations twice daily (morning and evening). Rinse your mouth with water and spit it out (do not swallow) after each dose to help prevent oral thrush.

Blog Posts:

The Surprising Connection Between Asthma and Oral Health

Latest News:

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The information on this page is sourced from independent third parties contracted by CanadaPharmacyOnline. While we cannot guarantee its medical accuracy, we strongly recommend consulting a healthcare professional for personalized advice regarding medications or medical conditions.

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