What is Singulair?
Singulair (montelukast) is a leukotriene (loo-koe-TRY-een) inhibitor. Leukotrienes are chemicals your body releases when you breathe in an allergen (such as pollen). These chemicals cause swelling in your lungs and tightening of the muscles around your airways, which can result in asthma symptoms.
Singulair is used to prevent asthma attacks in adults and children as young as 12 months old. Singulair is also used to prevent exercise-induced bronchospasm in adults and children who are at least 6 years old.
Singulair is also used to treat symptoms of year-round (perennial) allergies in adults and children who are at least 6 months old. It is also used to treat symptoms of seasonal allergies in adults and children who are at least 2 years old.
Do not give this medicine to a child without a doctor’s advice.
Singulair is also used to prevent exercise-induced bronchoconstriction (narrowing of the air passages in the lungs) in adults and teenagers who are at least 15 years old and are not already taking this medicine for other conditions.
If you already take Singulair to prevent asthma or allergy symptoms, do not use an extra dose to treat exercise-induced bronchoconstriction.
Important information
Singulair will not work fast enough to treat an asthma attack that has already begun. Use only a fast-acting inhalation medicine to treat an asthma attack. Talk with your doctor if any of your asthma medications do not seem to work as well in treating or preventing attacks.
Call your doctor right away if you feel that this medicine is not working as well as usual, or if it makes your condition worse. If it seems like you need to use more of any of your medications in a 24-hour period, talk with your doctor.
If you already take Singulair to prevent asthma or allergy symptoms, do not use it for exercise-induced bronchoconstriction.
Call your doctor at once if you have any mood or behavior changes, anxiety, depression, or thoughts about suicide or hurting yourself.
Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.
It may take up to several weeks before your symptoms improve. Keep using Singulair as directed and tell your doctor if your symptoms do not improve after several weeks of treatment.
How should I take Singulair?
Take Singulair exactly as prescribed by your doctor. Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended.
Singulair is usually taken once daily in the evening for prevention of asthma or allergy symptoms. For exercise-induced bronchoconstriction, take a single dose at least 2 hours before you exercise, and do not take another dose for at least 24 hours. Follow your doctor’s instructions.
Singulair is not a rescue medicine. It will not work fast enough to treat an asthma attack. Use only a fast acting inhalation medicine for an asthma attack. Tell your doctor if it seems like your asthma medications don’t work as well.
Swallow the regular tablet whole, with a glass of water.
The Singulair chewable tablet must be chewed completely before you swallow it.
It may take up to several weeks before your symptoms improve. Keep using Singulair as directed and tell your doctor if your symptoms do not improve after several weeks of treatment.
If you also take a steroid asthma medicine, do not stop using it suddenly without first talking to your doctor. You may need to use less and less before you stop the medication completely.
Asthma is usually treated with a combination of drugs. Use all medications as directed by your doctor. Read the medication guide or patient instructions provided with each medication. Do not change your doses or medication schedule without your doctor’s advice, even if you have no asthma symptoms.
Store Singulair at room temperature away from moisture and heat. Do not open a packet of oral granules until you are ready to use the medicine.
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