Montelukast 5 MG Tablet is a medication that is used to treat and prevent asthma. It will reduce the number of acute asthma attacks as well as the severity of the symptoms. This medication, on the other hand, should not be used to treat an asthma attack that has already begun. It is an antihistamine that prevents your airways from constricting. As a result, breathing becomes easier, and asthma attacks are avoided. This is very effective and safe to use.