Montelukast



Singulair®







Montelukast

(mon te LOO kast)

U.S. Brand Names
Singulair®
Canadian Brand Names
Singulair®
Mexican Brand Names
Singulair®
Pharmacologic Category
Leukotriene-Receptor Antagonist
Reasons not to take this medicine
  • If you have an allergy to montelukast or any other part of this medicine.
  • Tell healthcare provider if you are allergic to any medicine. Make sure to tell about the allergy and how it affected you. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other symptoms involved.
What is this medicine used for?
  • This medicine is used to prevent allergy symptoms.
  • This medicine is used to prevent or treat asthma.
How does it work?
  • Montelukast decreases the body's production of a group of chemicals called leukotrienes that worsen asthma.
  • It blocks the allergic reaction by minimizing or preventing the body's reaction to the allergen.
How is it best taken?
  • Take this medicine in the evening.
  • Take this medicine with or without food. Take with food if it causes an upset stomach.
  • Chewable tablet: Chew or crush well. Mix crushed tablet with food. Do not swallow whole.
  • You may sprinkle granules on soft food.
What do I do if I miss a dose? (does not apply to patients in the hospital)
  • Take a missed dose as soon as possible.
  • If it is almost time for the next dose, skip the missed dose and return to your regular schedule.
  • Do not take a double dose or extra doses.
  • Do not change dose or stop medicine. Talk with healthcare provider.
What are the precautions when taking this medicine?
  • Check medicines with healthcare provider. This medicine may not mix well with other medicines.
  • Avoid grapefruit and grapefruit juice.
  • If you have PKU, talk with healthcare provider. Some products do contain phenylalanine.
  • Tell healthcare provider if you are pregnant or plan on getting pregnant.
  • Tell healthcare provider if you are breast-feeding.
What are some possible side effects of this medicine?
  • Flu-like symptoms. These include headache, weakness, fever, shakes, aches, pains, and sweating. Mild pain medicine may help.
  • Nervous and excitable.
  • Headache.
  • Belly pain.
  • Nausea or vomiting. Small frequent meals, frequent mouth care, sucking hard, sugar-free candy, or chewing sugar-free gum may help.
  • Nasal congestion.
What should I monitor?
  • Change in condition being treated. Is it better, worse, or about the same?
  • Take good care of your teeth. See a dentist regularly.
  • Follow up with healthcare provider.
Reasons to call healthcare provider immediately
  • If you suspect an overdose, call your local poison control center immediately or dial 911.
  • Signs of a life-threatening reaction. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; fits; or swelling of face, lips, tongue, or throat.
  • Persistent cough.
  • Numbness or tingling of hands or feet.
  • Dark urine or yellow skin or eyes.
  • Not hungry.
  • Any rash.
  • No improvement in condition or feeling worse.
How should I store this medicine?
  • Store in original container at room temperature.
  • Protect from light.
  • Protect from moisture. Do not store in a bathroom or kitchen.
  • Use granules right after opening.
General statements
  • If you have a life-threatening allergy, wear allergy identification at all times.
  • Do not share your medicine with others and do not take anyone else's medicine.
  • Keep all medicine out of the reach of children and pets.
  • Keep a list of all your medicines (prescription, natural products, supplements, vitamins, over-the-counter) with you. Give this list to healthcare provider (doctor, nurse, nurse practitioner, pharmacist, physician assistant).
  • Talk with healthcare provider before starting any new medicine, including over-the-counter, natural products, or vitamins.
Brand Names: