Montelukast sodium granules are anti-allergy drugs, which can effectively reduce the patient’s allergic diseases. The specific duration of taking the drug mainly depends on whether the patient’s clinical symptoms have improved. If the condition improves significantly after using the drug, it is fine to use it for 3-5 days. If the patient’s symptoms are very serious, there is no problem to apply for about half a month. It is important to drink more water after the administration of Montelukast Sodium Granules to promote the absorption of the drug. Montelukast sodium granules belong to anti-allergy drugs, patients may have sleepy symptoms after drinking, it is best to take them before going to bed to avoid delaying their work and study. Patients are advised to exercise more in life to improve their immune system, avoid allergic diseases and minimize contact with allergens.