Patient Leaflet Updated 17-Jul-2026 | Aurobindo Pharma - Milpharm Ltd.
Montelukast 4 mg granules in sachet
Montelukast 4 mg granules in sachet
1. What Montelukast is and what it is used for
2. What you need to know before your child takes Montelukast
3. How to take Montelukast
4. Possible side effects
5. How to store Montelukast
6. Contents of the pack and other information
Montelukast is a leukotriene receptor antagonist that blocks substances called leukotrienes.
Leukotrienes cause narrowing and swelling of airways in the lungs. By blocking leukotrienes, Montelukast improves asthma symptoms and helps control asthma.
Your doctor has prescribed Montelukast to treat your child’s asthma, preventing asthma symptoms during the day and night.
Your doctor will determine how Montelukast should be used depending on the symptoms and severity of your child’s asthma.
Asthma is a long-term disease.
Asthma includes:
Symptoms of asthma include: Coughing, wheezing, and chest tightness.
Tell your doctor about any medical problems or allergies your child has now or has had.
Talk to your doctor or pharmacist before you give Montelukast to your child.
Various neuropsychiatric events (for example behaviour and mood-related changes, depression and suicidality) have been reported in patients of all ages treated with montelukast (see section 4). There have also been reports of these symptoms continuing after treatment is stopped. If you develop such symptoms while taking montelukast or if these symptoms do not resolve after montelukast is stopped, you should contact your prescriber.
Do not give this medicine to children less than 6 months of age.
There are different form(s) of this medicine available for paediatric patients under 18 years of age based on age range.
Tell your doctor or pharmacist if your child is taking or has recently been given or might be given any other medicines including those obtained without a prescription.
Some medicines may affect how Montelukast works, or Montelukast may affect how your child’s other medicines work.
Tell your doctor if your child is taking the following medicines before starting Montelukast:
Montelukast granules can be taken without regard to the timing of food intake.
This subsection is not applicable for the Montelukast 4 mg granules since they are intended for use in children 6 months to 5 years of age.
This subsection is not applicable for the Montelukast 4 mg granules since they are intended for use in children 6 months to 5 years of age, however the following information is relevant to the active ingredient, montelukast.
Montelukast is not expected to affect your ability to drive a car or operate machinery. However, individual responses to medication may vary. Certain side effects (such as dizziness and drowsiness) that have been reported with Montelukast may affect some patients’ ability to drive or operate machinery.
This medicine contains less than 1 mmol sodium (23 mg) per sachet, that is to say essentially ‘sodium-free’.
Always have your child take this medicine exactly as your doctor or pharmacist has told you. Check with your child’s doctor or pharmacist if you are not sure.
The recommended dose is one sachet of Montelukast 4 mg granules to be taken by mouth each evening.
If your child is taking Montelukast, be sure that your child does not take any other products that contain the same active ingredient, montelukast.
This medicine is for oral use.
Contact your child’s doctor immediately for advice.
There were no side effects reported in the majority of overdose reports. The most frequently occurring symptoms reported with overdose in adults and children included abdominal pain, sleepiness, thirst, headache, vomiting, and hyperactivity.
Try to give Montelukast as prescribed. However, if your child misses a dose, just resume the usual schedule of one sachet once daily.
Do not give a double dose to make up for a forgotten dose.
Montelukast can treat your child’s asthma only if he/she continues taking it.
It is important for your child to continue taking Montelukast for as long as your doctor prescribes. It will help control your child’s asthma.
If you have any further questions on the use of this medicine, ask your child’s doctor or pharmacist.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
In clinical studies with Montelukast 4 mg granules, the most commonly reported side effects (may affect up to 1 in 10 people) thought to be related to Montelukast were:
Additionally, the following side effects were reported in clinical studies with either Montelukast 10 mg film-coated tablets, Montelukast 5 mg or 4 mg chewable tablets:
These were usually mild and occurred at a greater frequency in patients treated with Montelukast than placebo (a pill containing no medication).
Talk with your doctor immediately if you notice any of the following side effects with your child, which may be serious, and for which your child may need urgent medical treatment.
Uncommon: may affect up to 1 in 100 people
Rare: may affect up to 1 in 1,000 people
Very rare: may affect up to 1 in 10,000 people
Very common: may affect more than 1 in 10 people
Common: may affect up to 1 in 10 people
Uncommon: may affect up to 1 in 100 people
Rare: may affect up to 1 in 1,000 people
Very rare: may affect up to 1 in 10,000 people
If your child gets any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.
Montelukast 4 mg granules in sachet are White to off-white granules.
Packs of 28 sachets.
Or
This leaflet was last revised in 06/2026.
Ref Ver: 01
P1542816
Milpharm Limited, 1 Roundwood Avenue, Stockley Park, Uxbridge, UB11 1AF, UK
+ 44 (0)208 845 8811
+44 (0)208 845 8811
http://www.aurobindo.com
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