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Brand Name: Singulair

Generic Name: montelukast

It is used to prevent and treat the symptoms of asthma
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What is this medicine?

Singulair (mon te LOO kast) is used to prevent and treat the symptoms of asthma. It is also used to treat allergies. Do not use for an acute asthma attack.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
  • liver disease
  • an unusual or allergic reaction to montelukast, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding

How should I use this medicine?

This medicine should be given by mouth. Follow the directions on the prescription label. Take this medicine at the same time every day. You may take this medicine with or without meals. Do not chew the tablets. Do not stop taking your medicine unless your doctor tells you to.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed. While this drug may be prescribed for children as young as 15 years of age for selected conditions, precautions do apply.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

  • anti-infectives like rifampin and rifabutin
  • medicines for diabetes like rosiglitazone and repaglinide
  • medicines for seizures like phenytoin, phenobarbital, and carbamazepine
  • paclitaxel

What should I watch for while using this medicine?

Visit your doctor or health care professional for regular checks on your progress. Tell your doctor or health care professional if your allergy or asthma symptoms do not improve. Take your medicine even when you do not have symptoms. Do not stop taking any of your medicine(s) unless your doctor tells you to.

If you have asthma, talk to your doctor about what to do in an acute asthma attack. Always have your inhaled rescue medicine for asthma attacks with you.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:
  • allergic reactions like skin rash or hives, or swelling of the face, lips, or tongue
  • breathing problems
  • confusion
  • dark urine
  • fever or infection
  • flu-like symptoms
  • hallucinations
  • painful lumps under the skin
  • pain, tingling, numbness in the hands or feet
  • sinus pain or swelling
  • suicidal thoughts or other mood changes
  • trouble sleeping
  • unusual bleeding or bruising
  • yellowing of the eyes or skin

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • cough
  • dizziness
  • drowsiness
  • headache
  • stomach upset
  • stuffy nose

Where should I keep my medicine?

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Protect from light and moisture. Keep this medicine in the original bottle. Throw away any unused medicine after the expiration date.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.


All visitors to AARP.org should seek expert medical care and consult their own physicians for any specific health issues. Read this disclaimer in its entirety.
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Note: This information is not intended to cover all possible uses, precautions, interactions, or adverse effects for this drug. If you have question about the drug(s) you are taking, check with your health care professional.
 
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