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

Montelukast Sun

Active Ingredient:
Montelukast
Origin:
EU

Montelukast Sun (Montelukast)

Montelukast, the active ingredient in Montelukast Sun, is a leukotriene receptor antagonist presented as an oral dosage form for systemic use. It is used to manage asthma, allergic rhinitis and exercise‑induced bronchoconstriction in patients requiring long‑term control of airway inflammation.
GNH India supplies Montelukast Sun as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Sun Pharmaceutical Industries Europe B.V.

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Indications & Clinical Uses

Montelukast acts on the leukotriene pathway to reduce airway inflammation and bronchoconstriction.

  • Asthma: decreases frequency of symptoms, improves lung function and reduces need for rescue inhalers.
  • Allergic rhinitis: relieves nasal congestion, sneezing and itchy eyes caused by seasonal allergens.
  • Exercise‑induced bronchoconstriction: prevents narrowing of the airways that can occur during or after physical activity.

How It Works

  • Montelukast selectively antagonizes the cysteinyl leukotriene receptor CysLT1, blocking the binding of leukotriene D4. This inhibition prevents leukotriene‑mediated bronchoconstriction, vascular permeability, and inflammatory cell recruitment, thereby reducing airway edema and hyperresponsiveness associated with asthma and allergic rhinitis.

Side Effects

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

Common Side Effects

  • Headache: mild to moderate pain often resolving without intervention.
  • Abdominal pain: discomfort or cramping in the stomach region.
  • Cough: transient irritation of the throat.
  • Nausea: feeling of queasiness, sometimes with mild vomiting.
  • Diarrhoea: loose stools occurring intermittently.
  • Fatigue: unusual tiredness or lack of energy.

Serious or Rare Side Effects

  • Angioedema: swelling of the face, lips, tongue or throat that may compromise breathing.
  • Stevens‑Johnson syndrome: severe skin reaction with blistering and detachment.
  • Hepatotoxicity: abnormal liver function tests indicating possible liver injury.
  • Mood changes: depression, anxiety or suicidal thoughts reported in rare cases.
  • Allergic rash: widespread hives or skin eruptions.
  • Anaphylaxis: rapid, life‑threatening allergic response requiring immediate medical care.

Precautions & Warnings

Before initiating therapy, consider the following safety measures.

  • Pregnancy: consult a healthcare professional; safety data are limited.
  • Breastfeeding: weigh potential benefits against unknown risks to the infant.
  • Liver impairment: use with caution; dose adjustment may be required.
  • Age restrictions: not recommended for children under 12 years for certain indications without specialist advice.
  • Concomitant medications: review all current drugs for possible interactions.
  • Store at ambient temperature: keep in the original packaging, protect from moisture and direct sunlight.

Avoid Interactions

Montelukast may interact with several medicines, requiring attention to the level of risk.

Major Interactions (Avoid)

  • Ritonavir: can increase montelukast plasma concentrations, raising the risk of adverse effects.
  • Phenobarbital: may markedly reduce montelukast exposure, diminishing therapeutic benefit.

Moderate Interactions (Monitor Closely)

  • Fluconazole: may elevate montelukast levels; monitor for side effects.
  • Warfarin: potential alteration of INR; regular coagulation monitoring advised.
  • Beta‑agonists: additive bronchodilator effect; assess for excessive bronchodilation.

Frequently Asked Questions

Montelukast Sun is prescribed for the long‑term management of asthma, allergic rhinitis and exercise‑induced bronchoconstriction. By targeting leukotriene‑mediated inflammation, it helps reduce airway narrowing, nasal symptoms and exercise‑related breathing difficulties.

Montelukast blocks the cysteinyl leukotriene receptor CysLT1, preventing leukotriene D4 from binding. This inhibition stops the cascade that leads to bronchoconstriction, mucus production, and inflammation, thereby improving airway patency and reducing allergic symptoms.

The specific dose of Montelukast Sun is determined by the prescribing clinician based on the patient’s age, condition severity, and overall health. Healthcare providers tailor the regimen to achieve optimal control of symptoms while minimizing risk.

Safety data for Montelukast Sun in pregnancy are limited, so it should only be used if the potential benefit justifies any possible risk. During breastfeeding, the drug passes into milk in small amounts; a healthcare professional should evaluate the risk‑benefit balance for the infant.

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 and any 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 especially useful for patients with allergic components or those who experience exercise‑induced bronchoconstriction, but it may be less potent than high‑dose inhaled steroids for severe persistent asthma.

Montelukast Sun should be stored at ambient temperature, below 25 °C, in its original container. Protect the product from moisture, excessive heat and direct sunlight to maintain its stability and potency throughout its shelf life.

Montelukast Sun is taken orally, usually once daily, with or without food. The tablet should be swallowed whole with a glass of water and not chewed or crushed, unless otherwise directed by a healthcare professional.

Serious adverse reactions, though rare, include angioedema, Stevens‑Johnson syndrome, severe liver injury and neuropsychiatric events such as depression or suicidal thoughts. Patients should seek immediate medical attention if they notice swelling of the face or throat, skin blistering, jaundice, or significant mood changes.

Montelukast Sun is contraindicated in individuals with known hypersensitivity to montelukast or any component of the formulation. Caution is advised for patients with severe liver disease, and it is generally not recommended for children under the age specified for a particular indication without specialist guidance.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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