Asmanex Twisthaler Side Effects

Generic name: mometasone

Medically reviewed by Drugs.com. Last updated on Apr 15, 2025.

Note: This document provides detailed information about Asmanex Twisthaler Side Effects associated with mometasone. Some dosage forms listed on this page may not apply specifically to the brand name Asmanex Twisthaler.

Applies to mometasone: implantation implant.

Other dosage forms:

• inhalation aerosol powder, inhalation powder

Precautions

It is very important that your doctor check your progress at regular visits to make sure this medicine is working properly and to check for unwanted effects.

This medicine may cause other nasal problems. Check with your doctor right away if you have bleeding, holes, infection, or irritation inside the nose.

Check with your doctor right away if blurred vision, difficulty in reading, or any other change in vision occurs during treatment with this medicine. Your doctor may want your eyes be checked by an ophthalmologist (eye doctor).

This medicine may cause serious allergic reactions, including angioedema, which can be life-threatening and requires immediate medical attention. Call your doctor right away if you have a rash, itching, hoarseness, trouble breathing or swallowing, or any swelling of your hands, face, or mouth while you are using this medicine.

You may get infections more easily while using this medicine. Tell your doctor right away if you have been exposed to someone with chickenpox or measles. Also tell your doctor if you develop white patches or sores in your nose while you are using this medicine.

Using too much of this medicine or using it for a long time may increase your risk of having adrenal gland problems. Talk to your doctor right away if you have darkening of the skin, diarrhea, dizziness, fainting, loss of appetite, mental depression, nausea, skin rash, unusual tiredness or weakness, or vomiting.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.

Serious side effects of Asmanex Twisthaler

Along with its needed effects, mometasone (the active ingredient contained in Asmanex Twisthaler) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking mometasone:

For healthcare professionals

Applies to mometasone: inhalation aerosol, inhalation aerosol powder.

Gastrointestinal adverse events

• Very common (10% or more): Oral candidiasis
• Uncommon (0.1% to 1%): Dry mouth and throat, dyspepsia^[Ref]

In clinical trials, gastroenteritis and vomiting occurred with an incidence of at least 1% but less than 3%.^[Ref]

Nervous system

• Very common (10% or more): Headache^[Ref]

Respiratory

• Very common (10% or more): Nasopharyngitis, allergic rhinitis, upper respiratory infection
• Common (1% to 10%): Sinusitis, bronchitis, pharyngitis, dysphonia, epistaxis, nasal irritation, respiratory disorder
• Postmarketing reports: Asthma aggravation, which may include cough, dyspnea, wheezing and bronchospasm^[Ref]

Genitourinary

• Common (1% to 10%): Dysmenorrhea, urinary tract infection (in pediatrics)^[Ref]

Musculoskeletal

• Common (1% to 10%): Musculoskeletal pain, back pain, myalgia^[Ref]

Other

• Common (1% to 10%): Fatigue, flu-like symptoms, pain, earache, infection, fever and bruise (in pediatrics)^[Ref]

In clinical trials, fatigue, flu-like symptoms, pain, earache, and infection occurred with an incidence of at least 1% but less than 3%.^[Ref]

Cardiovascular

• Uncommon (0.1% to 1%): Palpitations^[Ref]

Metabolic

• Uncommon (0.1% to 1%): Weight increase^[Ref]

Ocular

• Rare (less than 0.1%): Glaucoma, cataracts
• Postmarketing reports: Vision blurred^[Ref]

Psychiatric

• Frequency not reported: Psychomotor hyperactivity, sleep disorders, anxiety, depression or aggression^[Ref]

Hypersensitivity

• Postmarketing reports: Immediate and delayed hypersensitivity reactions including rash, pruritus, angioedema and anaphylactic reaction^[Ref]

See also:

Frequently asked questions

• Can asthma inhalers cause a sore throat?
• What causes Plaque Psoriasis?

Further information

Asmanex Twisthaler side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.

Medical Disclaimer