Product image of Montelukast Normon (Montelukast) supplied by GNH India

Montelukast Normon

Active Ingredient:
Montelukast
Origin:
EU

Montelukast Normon (Montelukast)

Montelukast, the active ingredient in Montelukast Normon, is a leukotriene receptor antagonist presented as an oral tablet for oral use. It is used to manage asthma, exercise‑induced bronchoconstriction, and allergic rhinitis in adults and children as directed by a healthcare professional.

GNH India supplies Montelukast Normon as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, with established quality assurance processes and regulatory compliance across EU and global markets. The company ensures reliable delivery timelines and supports pharmacovigilance reporting for its customers.

Manufacturer / TM Owner

Laboratorios Normon, S.A.

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Indications & Clinical Uses

Montelukast is a leukotriene receptor antagonist used to treat conditions mediated by leukotriene‑driven inflammation.

  • Asthma: reduces frequency of wheezing episodes and improves lung function in patients with persistent asthma.
  • Exercise‑induced bronchoconstriction: prevents airway narrowing that occurs during or after physical activity.
  • Allergic rhinitis: alleviates nasal congestion, sneezing and itching associated with seasonal or perennial allergic rhinitis.

How It Works

  • Montelukast selectively blocks the cysteinyl leukotriene receptor CysLT1 on airway smooth muscle and inflammatory cells. By antagonizing leukotrienes D4, E4 and related mediators, it inhibits bronchoconstriction, vascular permeability, and eosinophil recruitment, thereby reducing airway inflammation and hyper‑responsiveness.

Side Effects

Montelukast is generally well tolerated, but adverse reactions can occur.

Common Side Effects

  • Headache: mild to moderate headache reported in clinical use.
  • Abdominal pain: occasional stomach discomfort or cramps.
  • Nausea: transient feeling of queasiness.
  • Dizziness: light‑headed sensation, especially after first doses.
  • Cough: mild, non‑productive cough.
  • Sore throat: irritation of the throat.

Serious or Rare Side Effects

  • Allergic reactions: rash, angioedema or anaphylaxis requiring immediate medical attention.
  • Mood changes: reports of agitation, depression or suicidal thoughts.
  • Hepatic enzyme elevation: abnormal liver function tests in rare cases.
  • Stevens‑Johnson syndrome: severe skin reactions.
  • Eosinophilic granulomatosis with polyangiitis: rare vasculitic disorder.

Precautions & Warnings

When prescribing Montelukast, consider the following safety measures.

  • Pregnancy: Category B – use only if clearly needed after risk‑benefit assessment.
  • Breastfeeding: weigh potential infant exposure against maternal benefit.
  • Pediatric use: safety established in children six months of age and older; monitor growth.
  • Drug interactions: review concomitant medications for possible pharmacokinetic effects.
  • Renal/hepatic impairment: use with caution in severe dysfunction and monitor clinical response.
  • Store at ambient temperature: keep below 25°C, retain in original packaging, protect from moisture and direct sunlight.

Avoid Interactions

Montelukast may interact with several medicines; awareness of interaction severity guides management.

Major Interactions (Avoid)

  • Ritonavir: potent CYP3A4 inhibitor that can raise montelukast levels.
  • Phenobarbital, carbamazepine, phenytoin: strong enzyme inducers that may reduce efficacy.
  • Fluconazole: may increase systemic exposure.

Moderate Interactions (Monitor Closely)

  • Warfarin: potential increase in INR; monitor coagulation parameters.
  • Beta‑agonists: additive bronchodilator effect; observe for excessive stimulation.
  • ACE inhibitors: monitor for heightened cough or angioedema risk.

Frequently Asked Questions

Montelukast Normon is prescribed to control persistent asthma, prevent exercise‑induced bronchoconstriction, and relieve symptoms of allergic rhinitis such as nasal congestion, sneezing and itching. It works by blocking leukotrienes that contribute to airway inflammation and allergic responses.

Montelukast selectively antagonizes the cysteinyl leukotriene receptor CysLT1 on airway smooth muscle and inflammatory cells. By inhibiting leukotrienes D4, E4 and related mediators, it reduces bronchoconstriction, mucus secretion, and eosinophil recruitment, leading to improved airway patency and reduced allergic inflammation.

The specific dose of Montelukast Normon is determined by the prescribing clinician based on the patient’s age, diagnosis, and clinical response. Healthcare professionals follow approved labeling and adjust the regimen as needed for optimal therapeutic effect.

Montelukast is classified as Pregnancy Category B, indicating no evidence of risk in animal studies but limited human data. It may be used during pregnancy only if the potential benefit justifies any potential risk. While it passes into breast milk in small amounts, breastfeeding decisions should be made after weighing maternal benefit against possible infant exposure.

To place an order, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details (including any cold‑chain requirements) and necessary import documentation.

Montelukast belongs to the leukotriene receptor antagonist class, offering an oral alternative to inhaled corticosteroids or long‑acting beta‑agonists. It is particularly useful for patients with aspirin‑exacerbated respiratory disease or those who prefer a once‑daily tablet. Unlike bronchodilators, it does not provide immediate relief of acute bronchospasm but helps control chronic inflammation.

Montelukast Normon tablets should be stored at ambient temperature, below 25 °C. Keep them in the original blister or container, protect from moisture, heat and direct sunlight, and keep out of reach of children.

Montelukast Normon is taken orally, usually once daily in the evening, with or without food. The tablet should be swallowed whole with a glass of water. Patients should follow the dosing schedule prescribed by their healthcare provider.

Serious adverse events, though rare, include severe allergic reactions such as anaphylaxis, mood changes including depression or suicidal thoughts, and rare skin disorders like Stevens‑Johnson syndrome. Patients should seek immediate medical attention if they experience rash, swelling, mood disturbances, or any signs of an allergic reaction.

Montelukast is contraindicated in individuals with known hypersensitivity to montelukast or any component of the formulation. Caution is advised for patients with severe hepatic impairment, and it should be avoided in those who require immediate relief of acute bronchospasm, as it does not act as a rescue medication.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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