Montelukast

Pediatric Medication

This information from Lexicomp® explains what you need to know about this medication, including what it’s used for, how to take it, its side effects, and when to call your healthcare provider.

Brand Names: US

Singulair

Brand Names: Canada

Singulair

What is this drug used for?

  • It is used to ease allergy signs.
  • It is used to prevent exercise-induced breathing problems.
  • It is used to treat or prevent asthma.
  • It may be given to your child for other reasons. Talk with the doctor.

For asthma:

  • Do not give this drug to treat an asthma attack. Use a rescue inhaler. Talk with the doctor.

What do I need to tell the doctor BEFORE my child takes this drug?

  • If your child has an allergy to this drug or any part of this drug.
  • If your child is allergic to any drugs like this one or any other drugs, foods, or other substances. Tell the doctor about the allergy and what signs your child had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.

This drug may interact with other drugs or health problems.

Tell the doctor and pharmacist about all of your child’s drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for your child to take this drug with all of his/her drugs and health problems. Do not start, stop, or change the dose of any drug your child takes without checking with the doctor.

What are some things I need to know or do while my child takes this drug?

All products:

  • Tell all of your child’s health care providers that your child is taking this drug. This includes your child’s doctors, nurses, pharmacists, and dentists.

If your child is pregnant or breast-feeding a baby:

  • Talk with the doctor if your child is pregnant, becomes pregnant, or is breast-feeding a baby. You will need to talk about the benefits and risks to your child and the baby.

For breathing problems:

  • Call the doctor right away if your child has breathing problems that get worse, if the rescue inhaler does not work as well, or if your child needs to use the rescue inhaler more often.
  • If your child takes this drug for asthma or allergy, do not give another dose to prevent exercise-induced breathing problems.
  • If your child has asthma and taking aspirin makes it worse, make sure your child avoids aspirin and NSAIDs while your child takes this drug.
  • If your child is switching to this drug from a steroid, do not stop giving the steroid to your child all of a sudden. The dose of the steroid may need to be slowly lowered to avoid side effects. Talk with the doctor.

Chewable tablet:

  • If your child has phenylketonuria (PKU), talk with your child’s doctor. Some products have phenylalanine.

What are some side effects that I need to call my child’s doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your child’s doctor or get medical help right away if your child has any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Signs of liver problems like dark urine, feeling tired, not hungry, upset stomach or stomach pain, light-colored stools, throwing up, or yellow skin or eyes.
  • Signs of a pancreas problem (pancreatitis) like very bad stomach pain, very bad back pain, or very bad upset stomach or throwing up.
  • If your child shows signs of low mood (depression), thoughts of killing him/herself, nervousness, emotional ups and downs, thinking that is not normal, anxiety, or lack of interest in life.
  • Hallucinations (seeing or hearing things that are not there).
  • Memory problems or loss.
  • Feeling confused, not able to focus, or change in behavior.
  • Strange or odd dreams.
  • Trouble sleeping.
  • Trouble speaking.
  • Restlessness.
  • Sleepwalking.
  • Shakiness.
  • Trouble controlling body movements.
  • Seizures.
  • Trouble breathing that is new or worse.
  • Fever.
  • Flu-like signs.
  • Sinus pain.
  • Chest pain.
  • A heartbeat that does not feel normal.
  • Any unexplained bruising or bleeding.
  • A burning, numbness, or tingling feeling that is not normal.
  • Ear pain.
  • A very bad skin reaction (Stevens-Johnson syndrome/toxic epidermal necrolysis) may happen. It can cause very bad health problems that may not go away, and sometimes death. Get medical help right away if your child has signs like red, swollen, blistered, or peeling skin (with or without fever); red or irritated eyes; or sores in the mouth, throat, nose, or eyes.

What are some other side effects of this drug?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your child’s doctor or get medical help if any of these side effects or any other side effects bother your child or do not go away:

  • Headache.
  • Stomach pain or diarrhea.
  • Signs of a common cold.
  • Cough.

These are not all of the side effects that may occur. If you have questions about side effects, call your child’s doctor. Call your child’s doctor for medical advice about side effects.

You may report side effects to your national health agency.

How is this drug best given?

Give this drug as ordered by your child’s doctor. Read all information given to you. Follow all instructions closely.

All products:

  • Give this drug with or without food.
  • Give even during sign-free periods.
  • If working out or playing sports causes your child signs, give at least 2 hours before your child does it.
  • If this drug is for asthma, give in the evening.

Chewable tablet:

  • Have your child chew all the way up before swallowing.

Granules:

  • Granules may be placed right in the mouth or mixed with cold or room temperature applesauce, baby formula, breast milk, mashed carrots, rice, or ice cream. Do not mix granules in other liquids.
  • Do not open the packet until you are ready to give a dose. If mixing, give your child’s dose within 15 minutes. Do not store for future use.

What do I do if my child misses a dose?

  • Skip the missed dose and go back to your child’s normal time.
  • Do not give 2 doses at the same time or extra doses.

How do I store and/or throw out this drug?

  • Store in the original container at room temperature.
  • Protect from light.
  • Store in a dry place. Do not store in a bathroom.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.

General drug facts

  • If your child’s symptoms or health problems do not get better or if they become worse, call your child’s doctor.
  • Do not share your child’s drug with others and do not give anyone else’s drug to your child.
  • Keep a list of all your child’s drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your child’s doctor.
  • Talk with your child’s doctor before giving your child any new drug, including prescription or OTC, natural products, or vitamins.
  • Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your child’s doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Consumer Information Use and Disclaimer

This information should not be used to decide whether or not to take this medicine or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

Last Reviewed Date

2019-05-10

Copyright

© 2019 Wolters Kluwer Clinical Drug Information, Inc. and its affiliates and/or licensors. All rights reserved.

Last Updated