Singulair is a leukotriene inhibitor. Leukotrienes are the chemicals which cause swelling in your lungs and the tightening of muscles in the airways. I believe my doctor told me it was originally marketed as an asthma medication and then they discov

[Guest guest]

Singulair is a leukotriene inhibitor. Leukotrienes are the chemicals which cause swelling in your lungs and the tightening of muscles in the airways. I believe my doctor told me it was originally marketed as an asthma medication and then they discovered that in SOME people it also had an effect on allergies.

Willow I take Zyrtec and singulair along with advair as my asthma treatment. The 3 can be safely taken concurrently because they do not interact and they all work in slightly different ways. None of them alone controls my asthma/allergies but together, except when Im sick, they work great.

Ann