Mengluste can be taken for a long time, but should be taken under the guidance of a doctor, and according to the changes in the disease to decide whether to adjust the drug. Montelukast belongs to the leukotriene regulator, by regulating the biological activity of leukotrienes to play an anti-inflammatory effect, but also can diastole bronchial smooth muscle, clinically is mainly used for the treatment of bronchial asthma as well as for the control of rhinitis caused by the symptoms. In the treatment of asthma, the drug is in addition to inhaled glucocorticosteroids, the only can be used alone for the control of asthma attacks, can also be used as a mild asthma inhaled glucocorticosteroids hormone replacement therapy, can also be used for moderate to severe asthma combination therapy. The adverse effects of the drug are relatively mild, mainly gastrointestinal reactions, but also some patients may experience skin rashes, elevated transaminases, etc., which can usually return to normal after stopping the drug. Any drug needs to be under the guidance of a doctor, avoid unauthorized use. If there is any discomfort, consult a doctor promptly.