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Asmanex HFA (mometasone furoate)

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By Editorial Team

2 min read

Reviewed by: HU Medical Review Board | Last reviewed: June 2023 | Last updated: October 2023

Asmanex® (mometasone furoate) is an inhaled medicine that is used to prevent and control asthma symptoms.1,2

Asmanex is available in 2 different forms:1,2

  • Asmanex HFA
  • Asmanex Twisthaler®

Neither Asmanex product should be used as a rescue inhaler to treat an asthma attack. Your doctor may prescribe you a different inhaler to use as a rescue inhaler.1,2

What are the ingredients in Asmanex?

The active ingredient in Asmanex HFA and Asmanex Twisthaler is mometasone furoate.1,2

How does Asmanex work?

The active ingredient in both Asmanex HFA and Asmanex Twisthaler is a steroid. It works to control inflammation that plays a role in triggering asthma symptoms.1,2

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What are the possible side effects?

The most common side effects of Asmanex include:1,2

  • Thrush (fungal infection) of the throat and mouth
  • Inflammation of the nose, throat, and sinuses
  • Headache
  • Bronchitis
  • Flu
  • Upset stomach
  • Muscle and bone pain
  • Sore throat

These are not all the possible side effects of Asmanex. Talk to your doctor about what to expect when taking Asmanex. You also should call your doctor if you have any changes that concern you when taking Asmanex.

Other things to know

After using your Asmanex inhaler, rinse your mouth with water to help prevent a fungal infection of the mouth. Do not swallow the water.1,2

Before starting treatment with Asmanex, tell your doctor if you have:1,2

  • Liver problems
  • Osteoporosis
  • Immune system problems
  • Eye problems, such as glaucoma, cataracts, or blurred vision
  • Been exposed to chickenpox or measles
  • Current or past tuberculosis infection
  • A milk protein allergy

There is not enough data to know if Asmanex is safe to take while pregnant or breastfeeding. Before starting treatment with Asmanex, tell your doctor if you are pregnant, planning to become pregnant, or breastfeeding. Your doctor can help you decide if Asmanex is right for you.1,2

Your healthcare provider or respiratory therapist can show you how to use an inhaler properly.1,2

Asmanex can interact with a variety of other medicines, especially antifungals, antibiotics, and anti-HIV drugs. Before beginning treatment for asthma, tell your doctor about all your health conditions and any other drugs, vitamins, or supplements you are taking. This includes over-the-counter drugs.1,2

For more information, read the full prescribing information of Asmanex HFA and Asmanex Twisthaler.