Myteka Tablet Uses, Dosage and Side Effects in Pakistan
- Myteka = montelukast 10mg by Sanofi Pakistan — a leukotriene receptor antagonist (LTRA)
- Maintenance therapy for asthma and allergic rhinitis — NOT a rescue inhaler; does not stop acute attacks
- Take once daily at night — asthma is worst at night; evening dosing maximises benefit
- FDA black-box warning: rare but serious neuropsychiatric side effects (depression, suicidal ideation, nightmares)
- Safe for children with age-specific formulations (4mg, 5mg chewable)
What Is Myteka?
Myteka is the Sanofi Pakistan brand name for montelukast sodium 10 mg, a leukotriene receptor antagonist (LTRA). It is one of the few oral (non-inhaled) medications for asthma and allergic rhinitis — making it particularly valuable for patients who cannot use inhalers correctly (young children, elderly patients, those with poor inhaler technique).
Leukotrienes are inflammatory chemicals released by mast cells, eosinophils and basophils during allergic reactions and asthma episodes. They cause bronchoconstriction (airway narrowing), mucus secretion and airway inflammation. Montelukast selectively blocks CysLT1 receptors, preventing leukotrienes from triggering these effects.
| Generic name | Montelukast sodium |
| Strength | 10mg (adult); 5mg chewable (6–14 yrs); 4mg chewable (2–5 yrs) |
| Drug class | Leukotriene receptor antagonist (LTRA) |
| Brand in Pakistan | Myteka (Sanofi); also Monkast, Romilast, Arokast |
| Dosing | Once daily in the evening |
| Onset of effect | Days to weeks for full benefit |
| Prescription required | Yes |
| FDA warning | Black-box warning for neuropsychiatric events (2020) |
Myteka Uses
1. Asthma Maintenance Therapy
Myteka is approved as add-on maintenance therapy for asthma in patients whose symptoms are not adequately controlled by inhaled corticosteroids (ICS) alone. It reduces asthma symptoms, nocturnal awakenings and the need for rescue bronchodilator use. Important: it is not a substitute for ICS — the combination of ICS + LTRA is more effective than either alone in moderate asthma.
In Pakistan, where inhaler technique is often poor and patient adherence to inhaled steroids is low, montelukast's once-daily oral dosing makes it a pragmatic option for many patients.
2. Allergic Rhinitis
Montelukast is the only leukotriene antagonist approved for both allergic rhinitis and asthma. For seasonal allergic rhinitis (hay fever) and perennial allergic rhinitis (dust allergy), Myteka reduces nasal congestion, sneezing and rhinorrhea — particularly the nasal congestion that antihistamines address less effectively. The combination of Myteka + an antihistamine provides better nasal symptom control than either alone.
3. Exercise-Induced Bronchoconstriction (EIB)
For athletes and active individuals who develop wheezing and breathlessness during exercise, Myteka taken daily provides sustained protection against EIB. Unlike salbutamol (which is taken before exercise as needed), Myteka's protection is maintained with regular daily dosing and does not diminish with repeated use (no tolerance develops).
4. Aspirin-Exacerbated Respiratory Disease (AERD)
Patients with AERD (aspirin/NSAID-induced asthma and nasal polyps) have high leukotriene levels as a central feature of their disease. Montelukast is particularly effective in this subgroup, providing benefit in both asthma control and nasal polyp symptoms.
Myteka Dosage
| Age | Dose |
| Adults and adolescents (≥15 years) | 10mg once daily in the evening |
| Children 6–14 years | 5mg chewable tablet once daily in the evening |
| Children 2–5 years | 4mg chewable tablet or granules once daily in the evening |
| Children under 2 years | Not recommended (insufficient evidence) |
| With/without food | Either — food does not significantly affect absorption |
| Duration | Continue as directed — do not stop without consulting doctor |
Myteka Side Effects
Myteka is generally well-tolerated, but the FDA black-box warning (2020) requires prominent disclosure of neuropsychiatric effects:
Neuropsychiatric (Black-Box Warning):
- Nightmares, abnormal/vivid dreams, sleep disturbances
- Anxiety, depression, agitation, irritability
- Suicidal ideation and behaviour (rare but reported)
- Tremor, disorientation
- Stop Myteka and contact your doctor immediately if any of these develop
Common (Less Serious):
- Headache — most common physical side effect
- Abdominal pain, nausea, diarrhoea
- Fatigue
- Upper respiratory tract infection symptoms
Rare:
- Elevated liver enzymes (hepatotoxicity — rare)
- Churg-Strauss syndrome (eosinophilic vasculitis) — extremely rare; reported when oral steroids are tapered in LTRA-treated patients
Important: Myteka Is Not a Rescue Inhaler
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Conclusion
Myteka (montelukast 10mg) is a valuable non-steroid oral medication for asthma maintenance and allergic rhinitis in Pakistan. Its once-daily evening dosing and non-inhaled route make it particularly useful for children and patients with poor inhaler technique. However, the FDA black-box warning for neuropsychiatric effects requires monitoring — especially in patients with a psychiatric history. Never use Myteka as a rescue inhaler; always keep a salbutamol (Ventolin) inhaler available for acute attacks.
Frequently Asked Questions
Can Myteka replace my inhaler?
No. Myteka is maintenance-only — it does not stop acute asthma attacks. Always keep a salbutamol (Ventolin) rescue inhaler available. Myteka reduces the frequency and severity of attacks but cannot bronchodilate in minutes like a rescue inhaler.
When is the best time to take Myteka?
In the evening, 1–2 hours before bed. Asthma is typically worst at night. Evening dosing ensures peak drug levels during the highest-risk period. It can be taken with or without food.
Does Myteka cause mood changes or depression?
Yes — this is a real FDA black-box warning. Nightmares, depression, anxiety, agitation and suicidal thoughts have been reported. Risk is higher in patients with psychiatric history. Stop Myteka and call your doctor immediately if mood or sleep changes occur.
How long does it take for Myteka to work?
Days for initial effect, 2–4 weeks for full benefit. Take it consistently every day — missing doses allows leukotriene levels to rise and symptoms to return. Do not stop because you feel better after a few days.
Is Myteka safe for children?
Yes — with age-appropriate formulations: 4mg chewable (age 2–5), 5mg chewable (age 6–14), 10mg standard (age 15+). The neuropsychiatric warning applies to children too — monitor for nightmares, sleep disturbances or mood changes.
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