Montelukast Sodium can be discontinued after 7~14 days, the specific time can not be generalized, need to be decided according to the specific condition. Clinically, montelukast sodium is mainly used for the prevention and long-term treatment of asthma in children over 1 year old, and also has a certain effect on the relief of symptoms caused by allergic rhinitis. Usually, after taking the drug for about 7~14 days, the related symptoms have been relieved or disappeared, you can stop continuing to take the drug treatment. If the drug is used for long-term preventive treatment of asthma in children, it cannot be stopped within a short period of time and needs to be taken for a long period of time. The exact timing of discontinuation is uncertain and will be determined by your doctor based on an assessment of the effectiveness of the preventive treatment. Usually, after taking Montelukast Sodium, you may experience unpleasant symptoms such as diarrhea, nausea, and anxiety. It is contraindicated in patients who are allergic to any of the components of the drug, and is not suitable for pregnant women, nursing mothers, or elderly patients. Generally, it will be excreted through the bile after taking, so long-term use of the drug requires regular review of liver function. If you need to take Montelukast Sodium due to your condition, it is recommended to use it under the guidance of a doctor after a comprehensive assessment of your condition.