
Ask a doctor about a prescription for MONTELUKAST ALTER 4 mg CHEWABLE TABLETS
Patient Information Leaflet
Montelukast Alter 4 mg
chewable tablets EFG
Read all of this leaflet carefully before giving this medicine to your child, because it contains important information.
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Contents of the pack:
What is Montelukast Alter
Montelukast is a leukotriene receptor antagonist that blocks substances called leukotrienes.
How it worksMontelukast Alter
Leukotrienes cause narrowing and swelling of the airways in the lungs. By blocking leukotrienes, montelukast 4 mg improves asthma symptoms and helps control asthma.
When to useMontelukast Alter
Your doctor has prescribed montelukast 4 mg to treat your child's asthma and prevent asthma symptoms during the day and night.
Depending on your child's symptoms and the severity of their asthma, your doctor will determine how to use montelukast.
What is asthma?
Asthma is a chronic disease.
Asthma includes:
Asthma symptoms include: coughing, wheezing, and chest congestion.
Tell your doctor about any allergy or medical problem your child has now or has had.
Do not giveMontelukast Alterto your child
Warnings and precautions
Consult your doctor or pharmacist before giving montelukast 4 mg to your child.
Various neuropsychiatric events (such as changes related to behavior and mood, depression, and suicide) have been reported in patients of all ages treated with montelukast (see section 4). If your child develops such symptoms while taking montelukast, they should contact their doctor. |
Children and other adolescents
Do not give this medicine to children under 2 years of age.
For pediatric patients under 18 years of age, other formulations of this medicine are available based on the age range.
Other medicines and Montelukast Alter
Tell your doctor or pharmacist if your child is taking, has recently taken, or might take any other medicines, including those obtained without a prescription.
Some medicines may affect the way montelukast 4 mg works, or montelukast 4 mg may affect the way other medicines work that your child is using.
Before taking montelukast, tell your doctor if your child is taking the following medicines:
Taking Montelukast Alterwith food and drinks
Montelukast 4 mg chewable tablets should not be taken with food; they should be taken at least 1 hour before or 2 hours after food.
Pregnancy and breastfeeding
This subsection is not applicable to montelukast 4 mg chewable tablets, as their use is indicated in children between 2 and 5 years of age.
Driving and using machines
This subsection is not applicable to montelukast 4 mg chewable tablets, as their use is indicated in children between 2 and 5 years of age. However, the following information is important for the active substance, montelukast.
Montelukast is not expected to affect your child's ability to drive a car or operate machinery. However, individual responses to the medicine may vary. Certain side effects (such as dizziness and drowsiness) that have been reported very rarely with montelukast may affect your child's ability to drive or operate machinery.
Montelukast Alter4 mgchewable tablets contain aspartame and sodium
This medicine contains 2.40 mg of aspartame in each tablet.
Aspartame is a source of phenylalanine that may be harmful in case of phenylketonuria (PKU), a rare genetic disease in which phenylalanine accumulates because the body is unable to eliminate it properly.
This medicine contains less than 23 mg of sodium (1mmol) per tablet, which is essentially "sodium-free".
Follow exactly the administration instructions of this medicine indicated by your doctor or pharmacist for your child. In case of doubt, consult your child's doctor or pharmacist again.
For children from2 to5 years of age:
The recommended dose is one 4 mg chewable tablet daily in the evening.
If your child is taking montelukast, make sure they do not take any other medicine that contains the same active substance, montelukast.
This medicine is taken orally.
The tablets should be chewed before swallowing.
Montelukast 4 mg chewable tablets should not be taken with food; they should be taken at least 1 hour before or 2 hours after food.
If your child takes moreMontelukast Alterthan they should
Seek help from your child's doctor immediately.
In most cases of overdose, no side effects were reported. The symptoms that occurred most frequently reported in overdose in adults and children were abdominal pain, drowsiness, thirst, headache, vomiting, and hyperactivity.
In case of overdose or accidental ingestion, consult your doctor, pharmacist, or call the Toxicology Information Service, phone 91 562 04 20, indicating the medicine and the amount ingested. It is recommended to take the packaging and the leaflet of the medicine to the healthcare professional.
If you forget to giveMontelukast Alterto your child
Try to give montelukast 4 mg as prescribed. However, if your child forgets a dose, just resume the usual intake of one tablet once a day.
Do not give a double dose to make up for forgotten doses.
If your child stops takingMontelukast Alter
Montelukast can only treat your child's asthma if they continue taking it.
It is essential that your child continues taking montelukast for the time their doctor prescribes it. It will help control your child's asthma.
If you have any further questions about the use of this product, ask your child's doctor or pharmacist.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
In clinical trials with montelukast 4 mg chewable tablets, the side effects related to the administration of the medicine and reported most frequently (may affect up to 1 in 10 people) were:
Additionally, the following side effects were reported in clinical trials with montelukast 10 mg film-coated tablets and 5 mg chewable tablets:
These side effects were generally mild and occurred with a higher frequency in patients treated with montelukast tablets than with placebo (a pill that does not contain medicine).
Serious side effects
Consult your doctor immediatelyif you observe any of the following side effects in your child, which may be serious and require 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):
Other side effects reported during the marketing of the medicine
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):
Reporting of side effects
If your child experiences any side effects, consult your doctor or pharmacist, even if they are not listed in this leaflet. You can also report them directly through the Spanish Pharmacovigilance System for Human Use Medicines: https://www.notificaram.es. By reporting side effects, you can help provide more information on the safety of this medicine.
Composition of Montelukast Alter:
Appearance of the product and contents of the pack
The 4 mg chewable tablets are pink, oval, biconvex, and have the inscription "4" on one side.
They are available in packs of 28 tablets.
Marketing authorization holder
Laboratorios Alter, S.A.
C/ Mateo Inurria, 30
28036 Madrid-Spain
Manufacturer
Neuraxpharm Pharmaceuticals, S.L.
Avda. Barcelona, 69
08970 Sant Joan Despí, Barcelona
Spain
This leaflet was approved in:March 2025
Detailed information on this medicine is available on the website of the Spanish Agency for Medicines and Health Products (AEMPS) http://www.aemps.gob.es/
The average price of MONTELUKAST ALTER 4 mg CHEWABLE TABLETS in November, 2025 is around 16.84 EUR. Prices may vary depending on the region, pharmacy, and whether a prescription is required. Always check with a local pharmacy or online source for the most accurate information.
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Discuss dosage, side effects, interactions, contraindications, and prescription renewal for MONTELUKAST ALTER 4 mg CHEWABLE TABLETS – subject to medical assessment and local rules.