Generic name: Mometasone Inhalation Powder [ moe-MET-a-sone ]
Brand names: Asmanex 120 Metered Doses, Asmanex 14 Metered Doses, Asmanex 30 Metered Doses, Asmanex 60 Metered Doses, Asmanex 7 Metered Doses
Drug class: Inhaled corticosteroids

Medically reviewed by Drugs.com. Last updated on Feb 18, 2024.

Uses of Mometasone Inhalation Powder:

• It is used to treat asthma.
• Do not use mometasone inhalation powder to treat an asthma attack. Use a rescue inhaler. Talk with your doctor.

What do I need to tell my doctor BEFORE I take Mometasone Inhalation Powder?

• If you have an allergy to mometasone or any other part of mometasone inhalation powder.
• If you are allergic to mometasone inhalation powder; any part of mometasone inhalation powder; or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
• If you have a milk allergy.

This medicine may interact with other drugs or health problems.

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take mometasone inhalation powder with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take Mometasone Inhalation Powder?

• Tell all of your health care providers that you take mometasone inhalation powder. This includes your doctors, nurses, pharmacists, and dentists.
• Call your doctor right away if your breathing problems get worse, if your rescue inhaler does not work as well, or if you need to use your rescue inhaler more often.
• It may take a few weeks to see the full effect.
• If you have been taking mometasone inhalation powder for many weeks, talk with your doctor before stopping. You may want to slowly stop mometasone inhalation powder.
• You may have more chance of getting an infection. Wash hands often. Stay away from people with infections, colds, or flu.
• Chickenpox and measles can be very bad or even deadly in some people taking steroid drugs like mometasone inhalation powder. Avoid being near anyone with chickenpox or measles if you have not had these health problems before. If you have been exposed to chickenpox or measles, talk with your doctor.
• When changing from an oral steroid to another form of a steroid, there may be very bad and sometimes deadly side effects. Signs like weakness, feeling tired, dizziness, upset stomach, throwing up, not thinking clearly, or low blood sugar may happen. Call your doctor right away if you have any of these signs. If you have a bad injury, have surgery, or any type of infection, you may need extra doses of oral steroids. These extra steroids will help your body deal with these stresses. Carry a warning card saying that there may be times when you may need extra steroids.
• Long-term use may raise the chance of cataracts or glaucoma. Talk with the doctor.
• Have your eye pressure checked if you are on mometasone inhalation powder for a long time. Talk with your doctor.
• This medicine may cause weak bones (osteoporosis) with long-term use. Talk with your doctor to see if you have a higher chance of weak bones or if you have any questions.
• Have a bone density test as you have been told by your doctor. Talk with your doctor.
• Use with care in children. Talk with the doctor.
• This medicine may affect growth in children and teens in some cases. They may need regular growth checks. Talk with the doctor.
• Tell your doctor if you are pregnant, plan on getting pregnant, or are breast-feeding. You will need to talk about the benefits and risks to you and the baby.

Related/similar drugs

Symbicort, Ventolin HFA, Ventolin, Dupixent, Breo Ellipta, Xopenex

How is this medicine (Mometasone Inhalation Powder) best taken?

Use mometasone inhalation powder as ordered by your doctor. Read all information given to you. Follow all instructions closely.

• For breathing in only.
• Keep using mometasone inhalation powder as you have been told by your doctor or other health care provider, even if you feel well.
• Rinse out mouth after each use. Do not swallow the rinse water. Spit it out.
• Some inhalers have a dose counter to keep track of how many doses are left. If your inhaler has a dose counter, throw the inhaler away when the dose counter reaches "0."
• Clean mouthpiece by wiping with a dry tissue or cloth. Do not wash or put in water.
• Do not breathe out into the inhaler. Put the cap back on after you use your dose.

What do I do if I miss a dose?

• Skip the missed dose and go back to your normal time unless your doctor tells you to do something else.
• Do not use 2 doses at the same time or extra doses.

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

• Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
• Signs of infection like fever, chills, very bad sore throat, ear or sinus pain, cough, more sputum or change in color of sputum, pain with passing urine, mouth sores, or wound that will not heal.
• Signs of a weak adrenal gland like a very bad upset stomach or throwing up, very bad dizziness or passing out, muscle weakness, feeling very tired, mood changes, not hungry, or weight loss.
• Feeling very tired, weak, or touchy; trembling; having a fast heartbeat, confusion, sweating, or dizziness if you missed a dose or recently stopped mometasone inhalation powder.
• Redness or white patches in mouth or throat.
• Bone or joint pain.
• Change in eyesight.
• Flushing.
• This medicine can cause very bad breathing problems right after you take a dose. Sometimes, this may be life-threatening. If you have trouble breathing, breathing that is worse, wheezing, or coughing after using mometasone inhalation powder, use a rescue inhaler and get medical help right away.
• Period (menstrual) pain.

What are some other side effects of Mometasone Inhalation Powder?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

• Headache.
• Nose and throat irritation.
• Stomach pain.
• Upset stomach.
• Muscle pain.
• Back pain.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.

If OVERDOSE is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out Mometasone Inhalation Powder?

• Store at room temperature.
• Store in a dry place. Do not store in a bathroom.
• Throw away inhaler after 45 days of opening the pouch, when it says 0, or locks you from using it.
• Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
• Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.

Consumer Information Use and Disclaimer

• If your symptoms or health problems do not get better or if they become worse, call your doctor.
• Do not share your drugs with others and do not take anyone else's drugs.
• Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about mometasone inhalation powder, please talk with your doctor, nurse, pharmacist, or other health care provider.
• If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Frequently asked questions

• What causes Plaque Psoriasis?

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Medical Disclaimer