What is Asmanex and how does it work?

Asmanex is an inhaled corticosteroid used for long-term asthma control. It works by calming inflammation inside the airways, which helps them stay open and less sensitive to triggers. Asthma flare-ups often occur because the airways are swollen and reactive, not just because they tighten suddenly. By addressing this underlying irritation, Asmanex reduces the likelihood of frequent symptoms and helps breathing remain steadier throughout the day. Because it acts slowly, it is not meant for sudden attacks. It is used every day so that the lungs remain better protected against triggers like allergens, exercise, or temperature changes.

How is Asmanex taken?

Asmanex is taken through a metered-dose inhaler. The person inhales the medicine through the mouth so it can reach directly into the lungs. The inhaler is usually taken twice a day, although exact dosing depends on age and asthma severity. After inhaling the medicine, the person must rinse their mouth and spit out the water to help prevent thrush. Good inhaler technique is important for proper delivery, and checking technique regularly with a healthcare provider can help. Asmanex must be used daily to provide steady protection against airway inflammation.

Does Asmanex help during an asthma attack?

No. Asmanex is not fast-acting and will not help during a sudden asthma attack. It cannot provide quick relief from tightness, coughing, or severe shortness of breath. These symptoms require a rescue inhaler. Asmanex’s role is long-term protection, not emergency treatment. It helps reduce the number of future attacks by keeping the airways calmer over time. If someone needs their rescue inhaler more often than usual or finds that symptoms worsen while using Asmanex, they should contact a healthcare provider to reassess their treatment plan.

Can children use Asmanex?

Yes. Children aged 5 years and older may use Asmanex at the age-appropriate strength. Because children are still growing, healthcare providers will monitor their growth over time. Inhaled corticosteroids may slow growth velocity in some children, though the effect varies. Good asthma control is important for children’s sleep, school performance, and physical activity, so the benefits of controlled asthma often outweigh potential risks. Parents should ensure the child uses proper inhaler technique and rinses after each dose.

What symptoms require medical attention while using Asmanex?

A person should seek medical advice if they experience sudden worsening of breathing, severe thrush, chest tightness that doesn’t improve with rescue medicine, unusual tiredness, dizziness, or vision changes. In children, slowed growth or changes in activity level should be reported. Although these side effects are uncommon, early attention ensures safer long-term asthma control. Regular follow-ups allow healthcare providers to monitor for these issues and adjust therapy as needed.

Are there lifestyle measures that support Asmanex treatment?

Yes. Avoiding smoking, strong fumes, dust, and common allergens helps reduce flare-ups. Regular exercise, good hydration, and maintaining a healthy environment can support better breathing. Learning proper inhaler technique and cleaning the mouthpiece help ensure effective delivery. Families and caregivers can help children build consistent morning and evening routines. Keeping a rescue inhaler available at all times remains essential, even when symptoms improve.

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For visual reference only; actual product may vary

US Name:

Asmanex
Alternative Names:

Asmanex
Active Ingredients:

Mometasone Furoate
Brand Manufacturer:

Merck
Manufacturer Location:
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Asmanex ^*

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Asmanex Twisthaler is prescribed for the maintenance treatment of asthma in people aged 4 years and older

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Asmanex Twisthaler Brand	400mcg 60 Doses	- Asmanex – Brand, Asmanex Twisthaler, 400mcg, 60, Doses, 888888, Merck, 1964 + 0	Our price: $164.00
Asmanex Twisthaler Brand	200mcg 60 Doses	- Asmanex – Brand, Asmanex Twisthaler, 200mcg, 60, Doses, 888888, Merck, 1963 + 0	Our price: $141.00
Asmanex Twisthaler Brand	100mcg 30 Doses	- Asmanex – Brand, Asmanex Twisthaler, 100mcg, 30, Doses, 888888, Merck, 1962 + 0	Our price: $91.00

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Description
Side Effects
Indications
FAQ
Video

Asmanex (generic name: mometasone furoate) can be prescribed to treat asthma that requires long-term daily control. It is an inhaled corticosteroid designed to reduce swelling inside the airways. Asthma is a condition in which the breathing passages become inflamed and overly sensitive, making them narrow easily. By lowering inflammation, Asmanex helps the airways stay open and more stable throughout the day.

Mometasone furoate is used to prevent ongoing symptoms such as wheezing, chest tightness, shortness of breath, and night-time coughing. These symptoms often occur when airway swelling is not controlled. Asmanex does not provide quick relief during a sudden asthma attack; a separate fast-acting rescue inhaler is needed for that purpose. Its role is to decrease the frequency of flare-ups, reduce the need for rescue medicines, and help improve day-to-day breathing comfort.

Asmanex is delivered directly into the lungs through a metered-dose inhaler. Because it acts locally where inflammation occurs, the amount of steroid that reaches the rest of the body is kept lower than with oral corticosteroids. Different strengths allow the dose to be tailored to the person’s age and asthma severity.

Taken every day as prescribed, Asmanex supports steadier breathing, fewer asthma disruptions, and improved overall control of persistent symptoms.

Dosage

NOTE: The strengths of Asmanex Twisthaler are shown according to the European manufacturer’s specifications. The following table shows the equivalent US strengths:

100 mcg = 110 mcg in USA

200 mcg = 220 mcg in USA

400 mcg = 440 mcg in USA

It is important to follow the dosage instructions printed on the label of the box. Check with a doctor or pharmacist if there are any doubts regarding the proper dosage and treatment regimen.

Asmanex is taken by inhaling the medicine through the mouth using a metered-dose inhaler. Adults are usually prescribed strengths containing 100, 200 or 400 micrograms per actuation (US strengths 110, 220 or 440 mcg). The typical dosage is 100 mcg for patients 4 to 11 years old, and 200 mcg for adolescents 12 years and older.

The inhaler is usually taken twice daily – once in the morning and once in the evening – although the exact dose depends on asthma severity and previous treatment.

After each dose, the person should rinse the mouth with water and spit it out to help prevent thrush. If a dose is missed, it should be taken at the next regular time; a double dose must not be taken. Once asthma becomes stable, the doctor may lower the dose to the minimum needed to maintain good control.

Storage

Store at room temperature: 20-25 °C (68-77 °F).
Do not store above 30 °C (86 °F).
Do not puncture or burn the inhaler canister; the contents are under pressure and may explode if exposed to high temperatures or open flame.
Keep the cap on the mouthpiece when not in use and keep inhaler dry.
Keep out of reach of children.
Expiry date refers to the last day of the printed month.

This text is for informational purposes only. Please consult a doctor or pharmacist before using any medication.

The patient information leaflet that comes with the medication includes full information about the correct usage, storage and possible side effects. Be sure to read and understand these, and if there are any questions, discuss these with a healthcare provider or pharmacist before starting treatment.

Most people who use Asmanex do not experience any adverse side effects. Doctors prescribe this medication because they assess the benefits of such treatment outweigh any likely unwanted effects.

Common side effects:

sore throat or hoarse voice
headache
sinus discomfort
mild cough
cold-like symptoms
oral thrush (white patches in mouth or throat)

Serious side effects requiring immediate action:

sudden worsening of asthma or increasing difficulty breathing
severe oral thrush causing pain or swallowing problems
signs of adrenal issues such as extreme tiredness or dizziness
slowed growth in children
vision changes or eye pressure concerns

Not all side effects are listed here. If these or other unlisted symptoms persist or worsen, consult a healthcare provider or pharmacist.

Asmanex is prescribed for the maintenance treatment of asthma in people aged 4 years and older. It helps manage symptoms caused by long-term airway inflammation.

Common symptoms of uncontrolled asthma include:

wheezing
chest tightness
shortness of breath
night-time coughing
frequent flare-ups or need for rescue inhaler

These symptoms happen when the breathing passages are irritated and narrowed by swelling. Cold air, exercise, allergens, infections, or smoke can trigger attacks.

Asmanex does not treat sudden asthma attacks because it does not work quickly enough. A fast-acting rescue inhaler is needed for emergencies. Instead, Asmanex helps keep the airways calmer over time, making flare-ups less frequent and breathing more consistent. For people whose asthma persists despite occasional symptoms, daily inhaled corticosteroid therapy like Asmanex is often an important part of long-term asthma control.

Asmanex is an inhaled corticosteroid used for long-term asthma control. It works by calming inflammation inside the airways, which helps them stay open and less sensitive to triggers. Asthma flare-ups often occur because the airways are swollen and reactive, not just because they tighten suddenly. By addressing this underlying irritation, Asmanex reduces the likelihood of frequent symptoms and helps breathing remain steadier throughout the day. Because it acts slowly, it is not meant for sudden attacks. It is used every day so that the lungs remain better protected against triggers like allergens, exercise, or temperature changes.
Asmanex is taken through a metered-dose inhaler. The person inhales the medicine through the mouth so it can reach directly into the lungs. The inhaler is usually taken twice a day, although exact dosing depends on age and asthma severity. After inhaling the medicine, the person must rinse their mouth and spit out the water to help prevent thrush. Good inhaler technique is important for proper delivery, and checking technique regularly with a healthcare provider can help. Asmanex must be used daily to provide steady protection against airway inflammation.
No. Asmanex is not fast-acting and will not help during a sudden asthma attack. It cannot provide quick relief from tightness, coughing, or severe shortness of breath. These symptoms require a rescue inhaler. Asmanex’s role is long-term protection, not emergency treatment. It helps reduce the number of future attacks by keeping the airways calmer over time. If someone needs their rescue inhaler more often than usual or finds that symptoms worsen while using Asmanex, they should contact a healthcare provider to reassess their treatment plan.
Yes. Children aged 5 years and older may use Asmanex at the age-appropriate strength. Because children are still growing, healthcare providers will monitor their growth over time. Inhaled corticosteroids may slow growth velocity in some children, though the effect varies. Good asthma control is important for children’s sleep, school performance, and physical activity, so the benefits of controlled asthma often outweigh potential risks. Parents should ensure the child uses proper inhaler technique and rinses after each dose.
A person should seek medical advice if they experience sudden worsening of breathing, severe thrush, chest tightness that doesn’t improve with rescue medicine, unusual tiredness, dizziness, or vision changes. In children, slowed growth or changes in activity level should be reported. Although these side effects are uncommon, early attention ensures safer long-term asthma control. Regular follow-ups allow healthcare providers to monitor for these issues and adjust therapy as needed.
Yes. Avoiding smoking, strong fumes, dust, and common allergens helps reduce flare-ups. Regular exercise, good hydration, and maintaining a healthy environment can support better breathing. Learning proper inhaler technique and cleaning the mouthpiece help ensure effective delivery. Families and caregivers can help children build consistent morning and evening routines. Keeping a rescue inhaler available at all times remains essential, even when symptoms improve.

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