This page is for general information. Consult a doctor for personal advice. Call emergency services if symptoms are severe.

How to use MONTELUKAST VIR 5 mg CHEWABLE TABLETS

Introduction

PACKAGE LEAFLET: INFORMATION FOR THE USER

Montelukast VIR5 mg chewable tablets EFG

Read all of this leaflet carefully before you or your child start taking this medicine because it contains important information for you or for your child.

Keep this leaflet, as you may need to read it again.
If you have any further questions, ask your doctor or pharmacist.
This medicine has been prescribed for you or your child only. Do not pass it on to others, as it may harm them, even if their symptoms are the same as yours or your child's.
If you or your child experience any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. See section 4.

Contents of the pack:

What is Montelukast Vir and what is it used for
What you need to know before you take Montelukast Vir
How to take Montelukast Vir
Possible side effects
Storage of Montelukast Vir
Contents of the pack and further information

1. What is Montelukast VIR and what is it used for

Montelukast is a leukotriene receptor antagonist that blocks substances called leukotrienes.

How Montelukast Vir works

Leukotrienes cause narrowing and swelling of the airways in the lungs. By blocking leukotrienes, montelukast improves asthma symptoms and helps control asthma.

When to use Montelukast Vir

Your doctor has prescribed montelukast to treat asthma and prevent asthma symptoms during the day and night.

Montelukast is used to treat pediatric patients between 6 and 14 years of age who are not adequately controlled with their medication and need additional treatment.
Montelukast is also used as an alternative treatment to inhaled corticosteroids in patients between 6 and 14 years of age who have not recently taken oral corticosteroids for the treatment of their asthma and have demonstrated that they are unable to use inhaled corticosteroids.
Montelukast also helps prevent airway narrowing caused by exercise.

Depending on the symptoms and severity of your asthma or your child's asthma, your doctor will determine how to use montelukast.

Montelukast is a leukotriene receptor antagonist that blocks substances called leukotrienes. Leukotrienes cause narrowing and swelling of the airways in the lungs. By blocking leukotrienes, montelukast improves asthma symptoms and helps control asthma.

What is asthma?

Asthma is a chronic disease.

Asthma includes:

difficulty breathing due to narrowing of the airways. This narrowing of the airways worsens and improves in response to various diseases
airways that are sensitive and react to many things, such as cigarette smoke, pollen, cold air, or exercise
swelling (inflammation) of the inner layer of the airways.

The symptoms of asthma include: coughing, wheezing, and congestion in the chest.

2. What you need to know before you take Montelukast VIR

Tell your doctor about any allergy or medical problem that you or your child have now or have had.

Do not take Montelukast Vir

if you or your child:

are allergic to montelukast or any of the other ingredients of this medicine (listed in section 6).

Warnings and precautions

Consult your doctor or pharmacist before you or your child start taking montelukast.

If your asthma or breathing or your child's asthma or breathing worsen, tell your doctor immediately.
Montelukast oral is not indicated for the treatment of acute asthma attacks. If an attack occurs, follow the instructions given by your doctor for you or for your child. Always have your rescue inhaler medication for asthma attacks.
It is essential that you or your child use all asthma medications prescribed by your doctor.
Montelukast should not be used instead of other asthma medications that your doctor has prescribed for you or your child.
Any patient being treated with asthma medications should be aware that if they develop a combination of symptoms such as flu-like illness, tingling or numbness of arms or legs, worsening of lung symptoms, and/or skin rash, they should consult their doctor.
You or your child should not take acetylsalicylic acid (aspirin) or anti-inflammatory medications (also known as non-steroidal anti-inflammatory drugs or NSAIDs) if they worsen your asthma or your child's asthma.

Several neuropsychiatric events (such as changes in behavior and mood-related, depression, and suicidal tendencies) have been reported in patients of all ages treated with montelukast (see section 4). If you develop these symptoms while taking montelukast, you should contact your doctor.

Children and adolescents

Do not give this medicine to children under 6 years of age.

For pediatric patients under 18 years of age, other presentations of this medicine are available based on the age range.

Taking Montelukast Vir with other medicines

Tell your doctor or pharmacist if you or your child are taking, have recently taken, or might take any other medicines, including those obtained without a prescription.

Some medicines may affect the way montelukast works, or montelukast may affect the way other medicines work.

Before taking montelukast, tell your doctor if you or your child are taking the following medicines:

phenobarbital (used to treat epilepsy)
phenytoin (used to treat epilepsy)
rifampicin (used to treat tuberculosis and some other infections)

Taking Montelukast Vir with food and drinks

Montelukast should not be taken with meals; it should be taken at least 1 hour before or 2 hours after food.

Pregnancy and breastfeeding

If you are pregnant or breastfeeding, think you may be pregnant, or plan to become pregnant, consult your doctor or pharmacist before using this medicine.

Pregnancy

Your doctor will assess whether you can take montelukast during this period.

Breastfeeding

It is not known whether montelukast appears in breast milk. If you are breastfeeding or plan to breastfeed, you should consult your doctor before taking montelukast.

Driving and using machines

Montelukast is not expected to affect your 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 with montelukast may affect the patient's ability to drive or operate machinery.

Montelukast Vir 5 mg chewable tablets contain aspartame

This medicine contains 1.50 mg of aspartame in each chewable 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.

3. How to take Montelukast Vir

Follow the instructions for administration of this medicine exactly as indicated by your doctor or pharmacist. If you are unsure, consult your doctor or pharmacist again.

You or your child should only take one chewable tablet of montelukast once a day, as prescribed by your doctor. It should be taken even when you or your child do not have symptoms or when you or your child have an acute asthma attack.

For children from 6 to 14 years of age:

The recommended dose is one 5 mg chewable tablet daily in the evening. If you or your child are taking montelukast, make sure that neither your child nor you take any other product containing the same active ingredient, montelukast.

This medicine is taken orally.

The tablets should be chewed before swallowing.

Montelukast should not be taken with meals; it should be taken at least 1 hour before or 2 hours after food.

If you or your child take more Montelukast Vir than you should

Seek help from your doctor immediately.

In most cases of overdose, no side effects were reported. The symptoms that occurred most frequently in overdose in adults and children were abdominal pain, drowsiness, thirst, headache, vomiting, and hyperactivity.

If you or your child forget to take Montelukast Vir

Try to take montelukast as prescribed. However, if you or your child forget a dose, just resume your usual routine of one chewable tablet once a day.

Do not take a double dose to make up for forgotten doses.

If you or your child stop taking Montelukast Vir

Montelukast can only treat your asthma or your child's asthma if you or your child continue to take it.

It is essential that you continue taking montelukast for as long as your doctor prescribes it.

It will help control your asthma or your child's asthma.

If you have any other questions about the use of this medicine, ask your doctor or pharmacist.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

In clinical trials with montelukast 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:

For 5 mg:

headache

In addition to the following side effects reported in clinical trials with montelukast 10 mg film-coated tablets:

abdominal pain

These side effects were generally mild and occurred more frequently in patients treated with montelukast than with placebo (a pill that does not contain medicine).

Serious side effects

Consult your doctor immediatelyif you notice any of the following side effects, as they may be serious and may require medical treatment or urgent attention.

Uncommon (may affect up to 1 in 100 people):

allergic reactions including swelling of the face, lips, tongue, and/or throat that can cause difficulty breathing or swallowing
mood-related changes: excitement including aggressive or hostile behavior, depression
seizures

Rare (may affect up to 1 in 1,000 people):

increased risk of bleeding
tremor
palpitations

Very rare (may affect up to 1 in 10,000 people):

combination of symptoms such as flu-like illness, tingling or numbness of arms and legs, worsening of lung symptoms, and/or skin rash (Churg-Strauss syndrome) (see section 2)
low platelet count
mood-related changes: hallucinations, disorientation, suicidal thoughts and actions
inflammation (inflammation) of the lungs
severe skin reactions (erythema multiforme) that can occur without warning
inflammation of the liver (hepatitis)

Other side effects reported during the marketing of the medicine.

Very common (may affect more than 1 in 10 people):

upper respiratory tract infection

Common (may affect up to 1 in 10 people):

diarrhea, nausea, vomiting
skin rash
fever
elevated liver enzymes

Uncommon (may affect up to 1 in 100 people):

mood-related changes: sleep disturbances, including nightmares, sleep problems, sleepwalking, irritability, feeling anxious, restlessness
dizziness, drowsiness, tingling/numbness
nosebleeds
dry mouth, indigestion
bruising, itching, urticaria
joint or muscle pain, muscle cramps
bedwetting (in children)
weakness/fatigue, malaise, swelling

Rare (may affect up to 1 in 1,000 people):

mood-related changes: attention disturbance, memory disturbance, uncontrolled muscle movements

Very rare (may affect up to 1 in 10,000 people):

painful red lumps under the skin that most frequently appear on the shins (erythema nodosum)
stuttering

Reporting of side effects

If you or your child experience any side effects, talk to your doctor or pharmacist, even if it is possible side effects not listed in this leaflet. You can also report side effects directly through the Spanish Medicines and Healthcare Products Agency (AEMPS) website: https://www.notificaRAM.es

By reporting side effects, you can help provide more information on the safety of this medicine.

5. Storage of Montelukast Vir

Keep this medicine out of the sight and reach of children.
Do not use this medicine after the expiry date stated on the carton after EXP. The expiry date is the last day of the month stated.
Store below 30°C. Store in the original package to protect from light and moisture.
Medicines should not be disposed of via wastewater or household waste. Return the containers and any unused medicines to the pharmacy. If you are unsure, ask your pharmacist how to dispose of the containers and any unused medicines. This will help protect the environment.

6. Contents of the pack and further information

Composition of Montelukast VIR

The active substance is montelukast. Each chewable tablet contains 5.20 mg of montelukast sodium, equivalent to 5 mg of montelukast.

The other ingredients are: mannitol (E421), microcrystalline cellulose, croscarmellose sodium, red iron oxide (E172), cherry flavor (E951), aspartame (E951), and magnesium stearate.

Appearance and packaging of the product

Pink, speckled, round, biconvex tablet with "M5" engraved on one side and smooth on the other side.

Packaged in OPA-Al-PVC/Al blister packs.

Package sizes: 7, 10, 14, 20, 28, 30, 50, 56, 98, 100, 140, and 200 tablets.

Not all pack sizes may be marketed.

Marketing authorization holder and manufacturer

Industria Química y Farmacéutica VIR, S.A.

C/ Laguna 66-68-70. Polígono Industrial Urtinsa II.

28923 Alcorcón (Madrid)

Spain

This leaflet was approved in March 2025

Detailed and up-to-date information on this medicine is available on the website of the Spanish Agency for Medicines and Healthcare Products (AEMPS) http://www.aemps.gob.es/

How much does MONTELUKAST VIR 5 mg CHEWABLE TABLETS cost in Spain ( 2025)?

The average price of MONTELUKAST VIR 5 mg CHEWABLE TABLETS in December, 2025 is around 21.06 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.

Country of registration
Spain
Average pharmacy price
21.06 EUR
Active substance
montelukast
Prescription required
Yes
Manufacturer
Industria Quimica Y Farmaceutica Vir S.A.
This information is for reference only and does not constitute medical advice. Always consult a licensed doctor before taking any medication. Oladoctor is not responsible for medical decisions based on this content.
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