###Human: Is it safe to use Montair LC kid in a 4-year-old for reactive airway disease? ###Assistant: Hello. Please note that the medications prescribed are to the best of my knowledge. Montelukast has been prescribed for patients for prolonged periods extending up to even two years without any problems. It uses has shown reduced requirements of admission and improving the quality of life in patients suffering from hyperreactive airway disease. However, it would be good if we can omit the LC (Levocetirizine) content by just giving Montelukast alone in the form of tablet Montair 4 mg daily at 8 pm instead of Montair LC syrup (Levocetirizine, Montelukast). The Levocetirizine component may cause dry mouth, sleepiness consequent irritable behavior in very few children if given for prolonged periods. The tablet (Montair) can be crushed in a small cup of water, and the child can consume the paste or solution. Most of such cases usually get alright as age advances with complete remission by the age of six to eight years. Very rarely this may persist till 10 years. If it continues until the age of 10 to 12 years, it may progress into asthma in adulthood.