Singulair is the brand name of montelukast, a drug prescribed for people with asthma. Singulair helps prevent the wheezing and shortness of breath caused by asthma attacks. Consumer Medicine Information (CMI) about Singulair (Montelukast sodium) intended for persons living in Australia. Montelukast is used to prevent wheezing, difficulty breathing, chest tightness, and coughing caused by asthma. Montelukast is also used to prevent bronchospasm (breathing difficulties) during exercise. Easy-to-read patient leaflet for Singulair (Montelukast Chewable Tablets). Includes indications, proper use, special instructions, precautions, and possible side effects. Singulair (montelukast) is used to prevent asthma attacks in adults and children as young as 12 months old. Includes Singulair side effects, interactions and indications. Singulair is indicated in the treatment of asthma as add-on therapy in those 2 to 5 year old patients with mild to moderate persistent asthma who are inadequately controlled on inhaled corticosteroids and in whom “as-needed” short-acting β-agonists provide inadequate clinical control of asthma. Consuming alcohol is not expected to cause serious effects for patients who take Singulair (montelukast). However, you should consult your healthcare provider before drinking alcohol as it may be contraindicated in your condition. What should I discuss with my healthcare provider before taking montelukast (Singulair)? You should not use montelukast if you are allergic to it. Side effects from montelukast can happen at any time during treatment: Parents have reported to Parents United for Pharmaceutical Safety and Accountability that their children began experiencing side effects days, weeks, months, and even years after treatment with montelukast began. Montelukast is used regularly to prevent the wheezing and shortness of breath caused by asthma and decrease the number of asthma attacks. Montelukast is also used before exercise to prevent breathing problems.