This information from Lexicomp® explains what you need to know about this medication, including what it’s used for, how to take it, its side effects, and when to call your healthcare provider.
Brand Names: US
Asmanex (120 Metered Doses); Asmanex (14 Metered Doses); Asmanex (30 Metered Doses); Asmanex (60 Metered Doses); Asmanex (7 Metered Doses) [DSC]; Asmanex HFA
Brand Names: Canada
Asmanex Twisthaler
What is this drug used for?
- It is used to treat asthma.
- Do not use this drug to treat an asthma attack. Use a rescue inhaler. Talk with your doctor.
What do I need to tell my doctor BEFORE I take this drug?
All products:
- If you are allergic to this drug; any part of this drug; or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
Inhaler (powder):
- If you have a milk allergy.
This drug 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 this drug 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 this drug?
- Tell all of your health care providers that you take this drug. 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 this drug for many weeks, talk with your doctor before stopping. You may want to slowly stop this drug.
- Tell your doctor if you have missed a dose or recently stopped this drug and you feel very tired, weak, or shaky, or have a fast heartbeat, confusion, sweating, or dizziness.
- 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 this drug. 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 this drug for a long time. Talk with your doctor.
- This drug 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.
- If the patient is a child, use this drug with care. The risk of some side effects may be higher in children.
- This drug 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.
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:
All products:
- 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 severe upset stomach or throwing up, severe dizziness or passing out, muscle weakness, feeling very tired, mood changes, decreased appetite, or weight loss.
- Redness or white patches in mouth or throat.
- Bone or joint pain.
- Change in eyesight.
- Flushing.
- This drug 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 this drug, use a rescue inhaler and get medical help right away.
Inhaler (aerosol):
- Flu-like signs.
Inhaler (powder):
- Period (menstrual) pain.
What are some other side effects of this drug?
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:
All products:
- Headache.
- Nose or throat irritation.
Inhaler (powder):
- 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 your national health agency.
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.
How is this drug best taken?
Use this drug as ordered by your doctor. Read all information given to you. Follow all instructions closely.
All products:
- For breathing in only.
- Keep using this drug 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.”
Inhaler (aerosol):
- Prime before first use or if not used for more than 5 days. To prime the inhaler, spray 4 times into the air away from the face and eyes. Shake well before each spray.
- Shake well before use.
- Put the cap back on after you are done using your dose.
- Do not use near an open flame or while smoking. It may burst.
- Only use the device that comes with this drug. Do not use any other devices.
- Do not take the device apart or wash it in water. Clean the mouthpiece at least every 7 days of use by using a dry wipe.
- Keep the spray away from the eyes. If this drug gets in the eyes, rinse right away with water. If eye irritation or redness lasts, call the doctor.
Inhaler (powder):
- 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.
How do I store and/or throw out this drug?
All products:
- Store at room temperature in a dry place. Do not store in a bathroom.
- 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.
Inhaler (aerosol):
- Protect from heat or open flame. Do not puncture or burn even if it seems empty.
Inhaler (powder):
- Throw away inhaler after 45 days of opening the pouch, when it says 0, or locks you from using it.
General drug facts
- 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. If you have any questions about this drug, please talk with your doctor, nurse, pharmacist, or other health care provider.
- Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about this drug, 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.
Consumer Information Use and Disclaimer
This generalized information is a limited summary of diagnosis, treatment, and/or medication information. It is not meant to be comprehensive and should be used as a tool to help the user understand and/or assess potential diagnostic and treatment options. It does NOT include all information about conditions, treatments, medications, side effects, or risks that may apply to a specific patient. It is not intended to be medical advice or a substitute for the medical advice, diagnosis, or treatment of a health care provider based on the health care provider’s examination and assessment of a patient’s specific and unique circumstances. Patients must speak with a health care provider for complete information about their health, medical questions, and treatment options, including any risks or benefits regarding use of medications. This information does not endorse any treatments or medications as safe, effective, or approved for treating a specific patient. UpToDate, Inc. and its affiliates disclaim any warranty or liability relating to this information or the use thereof. The use of this information is governed by the Terms of Use, available at https://www.wolterskluwer.com/en/know/clinical-effectiveness-terms.
Last Reviewed Date
2022-06-20
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