December 1, 2015
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Asmanex Twisthaler

ASMANEX® HFA 100 mcg
(mometasone furoate) Oral Inhaler


ASMANEX HFA is a metered dose inhaler for oral inhalation only, consisting of 100 mcg and 200 mcg of mometasone furoate per actuation.

Mometasone furoate, the active component of ASMANEX HFA, is a corticosteroid having the chemical name 9,21-dichloro-11(Beta),17-dihydroxy-16 (alpha)-methylpregna-1,4-diene-3,20-dione 17-(2- furoate) with the following chemical structure:

ASMANEX® HFA 100 mcg (mometasone furoate) Structural Formula Illustration

Mometasone furoate is a white powder with an empirical formula of C27H30Cl2O6, and molecular weight 521.44. It is practically insoluble in water; slightly soluble in methanol, ethanol, and isopropanol; soluble in acetone.

Each ASMANEX HFA 100 mcg and 200 mcg is a hydrofluoroalkane (HFA-227: 1,1,1,2,3,3,3- heptafluoropropane) propelled pressurized metered dose inhaler containing sufficient amount of drug for 120 actuations [see HOW SUPPLIED/Storage and Handling]. After priming, each actuation of the inhaler delivers 115 or 225 mcg of mometasone furoate in 69.6 mg of suspension from the valve and delivers 100 or 200 mcg of mometasone furoate from the actuator. The actual amount of drug delivered to the lung may depend on patient factors, such as the coordination between actuation of the device and inspiration through the delivery system. ASMANEX HFA also contains ethanol as a cosolvent and oleic acid as a surfactant.

ASMANEX HFA should be primed before using for the first time by releasing 4 test sprays into the air, away from the face, shaking well before each spray. In cases where the inhaler has not been used for more than 5 days, prime the inhaler again by releasing 4 test sprays into the air, away from the face, shaking well before each spray.

What are the possible side effects of mometasone inhalation (Asmanex Twisthaler 120 Dose, Asmanex Twisthaler 14 Dose, Asmanex Twisthaler 30 Dose, Asmanex Twisthaler 60 Dose, Asmanex Twisthaler 7 Dose)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have a serious side effect such as:

  • wheezing, choking, or other breathing problems after using this medication;
  • skin rash, bruising, severe tingling, numbness, pain, muscle weakness;
  • changes in the shape or location of body...

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What are the precautions when taking mometasone furoate (Asmanex Twisthaler)?

Before using mometasone, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients (such as lactose, milk proteins), which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: current/past infections (such as tuberculosis, herpes), bone loss (osteoporosis), eye problems (such as cataracts, glaucoma), diabetes, decreased adrenal gland function.

If you have switched from a corticosteroid taken by mouth (such as prednisone tablets) to this inhaler within the past 12 months, or if you have been using this product in higher-than-usual doses for a long time, it may...

Read All Potential Precautions of Asmanex Twisthaler »

Last reviewed on RxList: 9/21/2015
This monograph has been modified to include the generic and brand name in many instances.

Asmanex Twisthaler - User Reviews

Asmanex Twisthaler User Reviews

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