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A 19-year-old male asked:

What are the chances of dulera (formoterol and mometasone) cause a negative methacholine challenge?

2 doctor answers2 doctors weighed in
Dr. John Chiu
Allergy and Immunology 57 years experience
Very high: In fact, we ask our patients to avoid using Dulera (formoterol and mometasone) for at least 2 weeks before doing any methacholine challenge. In research settings however, methacholine challenge may be used to assess the effectiveness of Dulera (formoterol and mometasone).
Dr. Luis Taylor
A Verified Doctoranswered
A US doctor answeredLearn more
High chance of error: http://nvrh.org/uploads/1234991810.pdf Please check these guidelines. Dulera (formoterol and mometasone) should not be taken 48 hours prior to the methacholine test. This is to avoid errors in its interpretation.

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A 19-year-old male asked:

Will dulera (formoterol and mometasone) without a doubt cause a false negative on a methacholine challenge ?

2 doctor answers4 doctors weighed in
Dr. Yun Tran
Dr. Yun Trananswered
Family Medicine 16 years experience
It could: It could potentially cause a false negative methacholine test. Even asthma patients taking no medications for a while could potentially have a negative methacholine test for various reasons. That's why it is best to diagnose asthma based on symptoms and not a methacholine test.

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Last updated Apr 19, 2016

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