Drugs >  Montelukast
Montelukast
Pronunciation
Brand Names
Therapeutic Categories
Reasons not to take this medicine
What is this medicine used for?
How does it work?
How is it best taken?
What do I do if I miss a dose?
What are the precautions when taking this medicine?
What are the common side effects of this medicine?
What should I monitor?
Reasons to call healthcare provider immediately
How should I store this medicine?
General statements

Pronunciation
(mon te LOO kast)

Brand Names
Singulair®

Therapeutic Categories
Leukotriene Receptor Antagonist

Reasons not to take this medicine

  • If you have an allergy to montelukast or any other part of the medicine.


What is this medicine used for?

  • This medicine is used in the prevention and long-term treatment of asthma. This is not for the immediate (urgent) treatment of an asthma attack.


How does it work?

  • Montelukast decreases the body's production of a group of chemicals called leukotrienes. These may worsen asthma.


How is it best taken?

  • Take this medicine in the evening.
  • Take with food if this medicine causes an upset stomach.
  • Chew the chewable tablet well. Do not swallow whole. These are for children.
  • Avoid grapefruit and grapefruit juice.


What do I do if I miss a dose?

  • Take a missed dose as soon as possible.
  • If it is almost time for the next dose, skip the missed one. Return to your regular schedule.
  • Do not take a double dose or extra doses.
  • Do not change dose or stop taking medicine without talking with healthcare provider.


What are the precautions when taking this medicine?

  • Wear disease medical alert identification for asthma.
  • Continue to carry and use inhaler for acute attacks.
  • 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, throat; or any other symptoms involved.
  • Tell healthcare provider if you are pregnant or plan on getting pregnant.
  • Tell healthcare provider if you are breast-feeding.


What are the common side effects of this medicine?

The side effects are similar to those from a placebo (a pill without any medicine).

  • Headache. Mild pain medicine may help.
  • Feeling tired, dizzy, irritable or restless
  • Upset stomach, heartburn, or belly pain.
  • Fever, cough, stuffy nose or flu.
  • Rash.


What should I monitor?

  • Watch for improvement in asthma symptoms.
  • Follow up with healthcare provider.


Reasons to call healthcare provider immediately

  • Signs of a life-threatening reaction. These include wheezing; tightness in the chest; fever; itching; bad cough; blue skin color; fits; swelling of face, lips, tongue, or throat.
  • Any rash.
  • No improvement in condition or feeling worse.


How should I store this medicine?

  • Store in the original container at room temperature. Protect from light and moisture.


General statements

  • 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, herbal/supplements, vitamins, over-the-counter) with you. Give this list to healthcare provider (doctor, nurse, pharmacist, physician assistant).
  • Talk with healthcare provider before starting any new medicine, including over-the-counter or natural products (herbs, vitamins).


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