Leukotrienes: Montelukast (Singulair) is a specific blocker of leukotrienes which are inflammatory molecules formed by eosinophils and mast cells which are cells involved in allergic response. Response to montelukast is variable but may be very helpful in those with asthma.
Answered 7/18/2015
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Nose and chest: Dr Fisher has given a good description on its action. In addition to asthma, Singulair (montelukast) may also be effective for allergic rhinitis. In my experience, it is effective in about 50% of the people. Singulair (montelukast) is not as effective as inhaled steroid but may be uniquely effective about 25% of the time.
Answered 7/18/2015
2.5k views
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