Singulair is used to treat asthma and allergies.

Full prescribing information is available at:


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  1. Long-Time
    New York

    It is criminal that these generics have no integrity and our FDA continues to certify them. Poorer persons are dying all in the interests of the profits of these sleazy companies.

  2. AJ

    Addendum: I just called the FDA at this number: 1-888-463-6332 to complain about the Teva Montelukast. They told me to fill out a form called “Medwatch Online Voluntary Reporting Form,” which I did fill out and send to them online. They said that these forms are taken seriously, which I hope is right.

    I told them about all of your complaints too, and they suggested that if more of you will go to the FDA website and click on Medwatch Online Voluntary Reporting Form and then fill it out, this will be considered a more serious problem for them to address, as there will be more people complaining. I hope you all can do that. Until you have experienced it, nobody knows how terrible it is to not be able to breathe well, to feel like you are suffocating, until it happens to them. This factor alone should be considered as a life-threatening side effect!

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