Asmanex Recall

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Manufacturer Warnings

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FDA Labeling Changes

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1.1 Treatment of Asthma

ASMANEX® TWISTHALER® is indicated for the maintenance treatment of asthma as prophylactic therapy in patients 4 years of age and older.

Important Limitations of Use

ASMANEX TWISTHALER is NOT indicated for the relief of acute bronchospasm.

ASMANEX TWISTHALER is NOT indicated in children less than 4 years of age.


There is currently no drug history available for this drug.

Other Information

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

Chemical Structure

Mometasone furoate is a white powder with an empirical formula of C27H30Cl2O6, and molecular weight of 521.44 Daltons.

The ASMANEX TWISTHALER 110 mcg and 220 mcg products are cap-activated, inhalation-driven, multidose dry powder inhalers containing mometasone furoate and anhydrous lactose (which contains trace amounts of milk proteins).

Each actuation of the ASMANEX TWISTHALER 110 mcg or 220 mcg inhaler provides a measured dose of approximately 0.75 or 1.5 mg mometasone furoate inhalation powder, containing 110 or 220 mcg of mometasone furoate, respectively. This results in delivery of 100 or 200 mcg mometasone furoate from the mouthpiece, respectively, based on in vitro testing at flow rates of 30 L/min and 60 L/min with constant volume of 2 L. The amount of mometasone furoate emitted from the inhaler in vitro does not differ significantly for flow rates ranging from 28.3 L/min to 70 L/min at a constant volume of 2 L. However, the amount of drug delivered to the lung will depend on patient factors such as inspiratory flow and peak inspiratory flow through the device. In adult and adolescent patients (aged ≥12 years) with varied asthma severity, mean peak inspiratory flow rate through the device was 69 L/min (range: 54–77 L/min). In pediatric patients (aged 5–12 years) diagnosed with asthma, mean peak inspiratory flow rate in the 5- to 8-year-old subgroup was >50 L/min (minimum of 46 L/min) and for the 9- to 12-year-old subgroup was >60 L/min (minimum of 48 L/min).

Asmanex Manufacturers

  • Physicians Total Care, Inc.
    Asmanex (Mometasone Furoate) Inhalant [Physicians Total Care, Inc.]
  • Merck Sharp & Dohme Corp.
    Asmanex (Mometasone Furoate) Inhalant [Merck Sharp & Dohme Corp.]

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