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A 38-year-old member asked:

How long does it usually take for singulair (montelukast) to begin working?

2 doctor answers3 doctors weighed in
Dr. Michael Palumbo
Allergy and Immunology 24 years experience
Within one week: If you don't feel improvement within 2 weeks then it won't help you.
Dr. Richard Williams
Pharmacy 19 years experience
Difficult to answer: Unlike rescue inhalers which work very quickly, oral drugs like singulair (montelukast) do take awhile. It would not be a very good substitute for a rescue inhaler because of this. Continue your other medications while taking singulair (montelukast) and don't be discouraged. Good Luck

Similar questions

A 16-year-old member asked:

How long does it take for singulair (montelukast) to be effective?

3 doctor answers6 doctors weighed in
Dr. Paul Carter
A Verified Doctoranswered
31 years experience
2: Singulair (montelukast) can be effective in as few as 2 hours. For patients with exercise induced asthma should take singulair (montelukast) at least 2 hours before exercise to be able to feel the effect of the medication. Because of the inflammatory nature of asthma in most other cases it can take several days to achieve full benefit of the singulair (montelukast).
Dr. Josephine Ruiz-healy
Pediatrics 40 years experience
The other important issue is to be very compliant with your mediciness!
Oct 16, 2011

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Last updated Jul 20, 2018
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