Drug Class: Leukotriene Receptor Antagonist — LTRA | Form: Chewable Tablets (Oral) | Prescription Status: Prescription Only (Rx) — DRAP Registered
What is Myteka Tablets 4mg?
Myteka Tablets 4mg contain Montelukast sodium — a leukotriene receptor antagonist or LTRA (لیوکوٹرین بلاک کرنے والی دوا) used in children aged 6 months to 5 years for the long-term management of asthma (دمہ), prevention of exercise-induced bronchoconstriction (ورزش سے سانس کی نالی کا تنگ ہونا), and treatment of seasonal and perennial allergic rhinitis (موسمی اور سال بھر رہنے والی ناک کی الرجی — چھینکیں، بند ناک، اور بہتی ناک). Leukotrienes (لیوکوٹرینز) are natural inflammatory chemicals released by the body in response to allergens — triggers such as pollen, dust, animal dander, and cold air — that cause the airways and nasal passages to swell, narrow, and produce excess mucus. Montelukast works by blocking the receptors these chemicals attach to — preventing the airway inflammation and narrowing that causes asthma and allergy symptoms. The 4mg formulation is specifically dosed for young children aged 6 months to 5 years. Myteka 4mg requires a valid prescription and must be used under medical supervision.
What is Myteka 4mg Used For?
Myteka Tablets 4mg is indicated for the following conditions in children 6 months to 5 years of age:
Asthma — Long-Term Management (دمہ کا طویل مدتی علاج) — used daily for the prevention and long-term control of asthma symptoms — including recurrent wheezing (سانس میں سیٹی کی آواز), shortness of breath (سانس پھولنا), chest tightness (سینے میں جکڑن), and coughing (کھانسی). Montelukast is a controller medicine — not a rescue inhaler — it prevents symptoms from occurring rather than treating acute attacks
Exercise-Induced Bronchoconstriction — EIB (ورزش سے سانس کی نالی کا تنگ ہونا) — prevents the airway narrowing triggered by physical activity or exercise in asthmatic children — taken at least 2 hours before exercise when used for this purpose
Seasonal Allergic Rhinitis (موسمی الرجی — ناک کی سوزش) — treatment of symptoms caused by seasonal allergens such as pollen — including sneezing (چھینکیں), runny nose (بہتی ناک), nasal congestion (بند ناک), and itchy, watery eyes (آنکھوں میں خارش اور پانی)
Perennial Allergic Rhinitis (سال بھر رہنے والی الرجی) — treatment of year-round allergy symptoms caused by persistent allergens such as house dust mites, pet dander, and mould
How Does Myteka 4mg Work?
Myteka contains Montelukast sodium — a selective and orally active leukotriene receptor antagonist that targets the underlying inflammatory process causing asthma and allergic rhinitis.
When the airways or nasal passages are exposed to an allergen or trigger, specialised immune cells release leukotrienes — particularly cysteinyl leukotrienes LTC4, LTD4, and LTE4 (سسٹینائل لیوکوٹرینز). These chemicals bind to receptors on the smooth muscle cells and mucous membranes lining the airways and nose — causing three key responses that produce symptoms: bronchoconstriction (airways narrow and tighten — سانس کی نالی کا تنگ ہونا), increased mucus secretion (بلغم کا زیادہ بننا), and mucosal oedema (ناک اور سانس کی نالی میں سوجن).
Montelukast selectively blocks the CysLT1 receptor — the receptor through which these leukotrienes exert their inflammatory effects. By occupying this receptor, Montelukast prevents leukotrienes from attaching and triggering the inflammatory cascade — reducing airway inflammation, preventing bronchoconstriction, decreasing mucus production, and relieving nasal congestion.
When taken daily, Montelukast provides consistent, ongoing blockade of the leukotriene pathway — reducing both the frequency and severity of asthma and allergy symptoms over time.
Dosage and Administration
Myteka 4mg must be taken exactly as prescribed by the child's doctor. Do not change the dose without medical advice (ڈاکٹر کے مشورے کے بغیر خوراک تبدیل نہ کریں).
| Age Group | Dose | Timing |
|---|---|---|
| Children 6 months to 5 years — Asthma or Allergic Rhinitis | One 4mg chewable tablet once daily | In the evening — at the same time each day |
| Children 6 months to 5 years — Exercise-Induced Bronchoconstriction | One 4mg chewable tablet | At least 2 hours before exercise — no additional dose that day if already on daily therapy |
Important Administration Instructions:
- The 4mg tablet is a chewable tablet formulated for young children — chew the tablet thoroughly before swallowing (گولی کو اچھی طرح چبا کر نگلیں)
- Can be given with or without food
- For asthma and rhinitis control — give once daily in the evening at the same time each day (شام کو ایک ہی وقت پر دیں)
- Montelukast is a controller medicine — it must be taken every day for sustained benefit, even when the child appears well and has no symptoms (علامات نہ ہوں تب بھی دوا جاری رکھیں)
- Do not use as a rescue medicine during an acute asthma attack — the child's prescribed rescue inhaler (e.g. Salbutamol) must be used for acute symptoms
- If a dose is missed (خوراک بھول جائیں) — give it as soon as remembered. If it is almost time for the next dose, skip the missed dose. Never give a double dose.
Active Ingredients
| Ingredient | Role |
|---|---|
| Montelukast Sodium 4mg | Leukotriene receptor antagonist — selectively blocks CysLT1 receptors to prevent leukotriene-driven airway inflammation, bronchoconstriction, and nasal congestion |
Also contains standard chewable tablet excipients including flavouring agents. Please check the product label or ask your pharmacist for full composition details — some excipients may be relevant for children with food sensitivities.
Who Should NOT Use Myteka 4mg?
Do not use Myteka if the child (استعمال نہ کریں اگر):
- Is allergic to Montelukast or any other ingredient in the tablet (الرجی ہو)
- Is under 6 months of age — the 4mg formulation is not approved below this age
Tell your doctor before use if (ڈاکٹر کو بتائیں اگر):
- The child has a history of phenylketonuria (فینائل کیٹونیوریا) — some chewable tablet formulations contain aspartame — check the product label carefully
- The child has liver problems (جگر کی بیماری) — Montelukast is metabolised in the liver
- The child has a known aspirin or NSAID sensitivity (اسپرین سے الرجی) — Montelukast may not fully prevent leukotriene-mediated reactions in these patients
- The child experiences any mood or behavioural changes after starting Myteka — neuropsychiatric effects have been reported and must be reported to the doctor promptly
Side Effects
Not everyone will experience side effects. Myteka 4mg is generally well tolerated in young children.
Common Side Effects (عام ضمنی اثرات):
- Upper respiratory tract infections — cold symptoms (نزلہ زکام)
- Fever (بخار)
- Earache (کان میں درد)
- Stomach pain or discomfort (پیٹ میں درد)
- Diarrhoea (اسہال)
- Skin rash (جلد پر دانے)
- Thirst (پیاس زیادہ لگنا)
Serious Side Effects (سنگین ضمنی اثرات — consult your doctor promptly):
- Neuropsychiatric effects (دماغی اور رویے کی تبدیلیاں) — this is the most important warning for Montelukast in all age groups. Reported effects include agitation (بے چینی), aggressive behaviour (جارحانہ رویہ), anxiety (پریشانی), nightmares (ڈراؤنے خواب), sleep disturbances (نیند میں خرابی), hallucinations (وہم), depression (ڈپریشن), and suicidal thoughts. These effects are rare but serious — stop Myteka and contact the doctor immediately if any of these are noticed in the child
- Severe allergic reaction (شدید الرجی) — rash, facial swelling, difficulty breathing — seek emergency help immediately
- Liver problems (جگر کی تکلیف) — yellowing of skin or eyes (یرقان) — stop and consult doctor immediately
- Eosinophilic granulomatosis (نایاب خون کی بیماری) — rare — fever, rash, and worsening respiratory symptoms — seek medical assessment
Stop the medicine and contact the child's doctor immediately if any serious side effect occurs (فوری طور پر ڈاکٹر سے رابطہ کریں).
Drug Interactions
Always inform the child's doctor and pharmacist about all medicines currently being taken (تمام ادویات کے بارے میں ڈاکٹر کو بتائیں).
| Medicine / Substance | Effect of Interaction |
|---|---|
| Phenobarbital and Phenytoin (مرگی کی ادویات) | May reduce Montelukast blood levels — reducing its effectiveness |
| Rifampicin (ٹی بی کی دوا) | Reduces Montelukast levels significantly — monitor treatment response |
| CYP3A4 inducers — e.g. Carbamazepine | May reduce Montelukast effectiveness — monitor closely |
| Aspirin and NSAIDs (درد کی ادویات) | In aspirin-sensitive asthma — Montelukast may not fully prevent reactions — avoid triggering medicines |
| Gemfibrozil (کولیسٹرول کی دوا) | Increases Montelukast blood levels — use with caution |
Storage Instructions
- Store below 25°C in a cool, dry place (ٹھنڈی اور خشک جگہ پر رکھیں)
- Keep away from direct sunlight and moisture (دھوپ اور نمی سے دور رکھیں)
- Keep out of reach of children (بچوں کی پہنچ سے دور رکھیں)
- Do not use after the expiry date printed on the pack (میعاد ختم ہونے کے بعد استعمال نہ کریں)
- Store in the original packaging to protect from light and humidity
Frequently Asked Questions
What is Myteka 4mg used for?
Myteka 4mg contains Montelukast — a leukotriene receptor antagonist used in children aged 6 months to 5 years to control asthma (دمہ), prevent exercise-induced airway narrowing (ورزش سے سانس کی نالی کا تنگ ہونا), and treat seasonal and year-round allergic rhinitis (ناک کی الرجی). It works by blocking the leukotriene receptors that cause airway inflammation, narrowing, and excess mucus production.
Is Myteka 4mg a rescue medicine for asthma attacks?
No — Myteka 4mg is a controller medicine, not a rescue medicine. It must be taken every day to prevent asthma and allergy symptoms from occurring — even when the child feels completely well (علامات نہ ہوں تب بھی دوا جاری رکھیں). For acute asthma attacks or sudden breathing difficulty, the child's prescribed rescue inhaler (such as Salbutamol) must be used. Never use Myteka as a replacement for a rescue inhaler during an attack.
When should Myteka 4mg be given to a child?
For asthma and allergic rhinitis, Myteka 4mg is given once daily in the evening (شام کو ایک مرتبہ دیں) — at the same time each day. For prevention of exercise-induced bronchoconstriction, the tablet should be given at least 2 hours before planned exercise. If the child is already on daily Myteka therapy, no additional dose should be given before exercise on the same day.
Can Myteka 4mg affect a child's behaviour or mood?
Yes — this is an important safety warning. Montelukast has been associated with neuropsychiatric side effects in some patients — including agitation (بے چینی), aggressive behaviour (جارحانہ رویہ), anxiety, nightmares, sleep disturbances, and in rare cases depression or hallucinations. Parents and caregivers should monitor the child's behaviour and mood carefully after starting Myteka — particularly in the first few weeks. If any behavioural or mood changes are noticed, stop the medicine and contact the doctor immediately (فوری طور پر ڈاکٹر سے رابطہ کریں).
How is Myteka 4mg different from Myteka 5mg and 10mg?
All Myteka tablets contain the same active ingredient — Montelukast — but at different doses for different age groups. The 4mg chewable tablet is specifically formulated for young children aged 6 months to 5 years. The 5mg chewable tablet is for children aged 6 to 14 years. The 10mg tablet is for adolescents and adults aged 15 years and older. Your doctor will always prescribe the age-appropriate strength for your child.
⚕️ Medical Disclaimer: This product description is for informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Myteka is a prescription medicine — always give it to the child exactly as directed by the doctor. If you notice any mood changes, agitation, nightmares, or behavioural changes in the child after starting Myteka, stop the medicine and consult the doctor immediately. Do not use this medicine as a rescue treatment during an acute asthma attack.
DRAP Registered | Prescription Only (Rx) | For oral use — chewable tablet | For children aged 6 months to 5 years | Keep out of reach of children