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

Montelukast Cristers

Active Ingredient:
Montelukast
Origin:
EU

Montelukast Cristers (Montelukast)

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

GNH India supplies Montelukast Cristers as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Sun Pharma France

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Indications & Clinical Uses

Montelukast acts on leukotriene pathways to control airway inflammation and bronchoconstriction.

  • Asthma: improves symptom control and reduces exacerbations.
  • Allergic rhinitis: relieves nasal congestion, sneezing and itching.
  • Exercise‑induced bronchoconstriction: prevents airway narrowing triggered by physical activity.

How It Works

  • Montelukast selectively blocks the cysteinyl leukotriene receptor CysLT1, preventing leukotrienes from binding and triggering bronchoconstriction, mucus secretion, and airway edema. By inhibiting this inflammatory cascade, the drug reduces airway hyper‑responsiveness and improves respiratory function in patients with asthma and related allergic conditions.

Side Effects

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

Common Side Effects

  • Headache: mild to moderate pain often resolves without intervention.
  • Upper respiratory tract infection: symptoms such as sore throat or nasal congestion.
  • Abdominal pain: intermittent discomfort or cramping.
  • Cough: occasional dry or productive cough.
  • Diarrhoea: loose stools that are usually self‑limiting.
  • Rash: mild skin irritation or erythema.

Serious or Rare Side Effects

  • Mood changes: depression, anxiety, or suicidal thoughts.
  • Allergic reactions: hives, swelling, or anaphylaxis.
  • Liver enzyme elevation: abnormal hepatic function tests.
  • Stevens‑Johnson syndrome: severe skin blistering and mucosal involvement.
  • Angio‑edema: rapid swelling of face, lips or tongue.
  • Blood dyscrasias: rare cases of neutropenia or thrombocytopenia.

Precautions & Warnings

Montelukast should be used with awareness of specific safety considerations.

  • Pregnancy: Category B – generally considered safe, but use only if clearly needed.
  • Breastfeeding: excreted in milk; benefits and risks should be evaluated.
  • Hepatic impairment: monitor liver function in patients with existing liver disease.
  • Psychiatric symptoms: observe for mood changes, especially in adolescents.
  • Drug interactions: review concomitant medications for potential interactions.
  • Store at ambient temperature: keep below 25 °C, retain in original packaging, protect from moisture and direct sunlight.

Avoid Interactions

Montelukast may interact with other medicines that affect the same metabolic pathways or exacerbate side effects.

Major Interactions (Avoid)

  • Phenobarbital: induces hepatic enzymes, reducing montelukast exposure.
  • Rifampin: strong enzyme inducer that may lower therapeutic levels.

Moderate Interactions (Monitor Closely)

  • Antidepressants (SSRIs, SNRIs): may increase risk of neuropsychiatric events.
  • Warfarin: occasional reports of altered INR; monitor coagulation parameters.
  • Other leukotriene modifiers: additive effects on leukotriene pathways; assess clinical need.
  • CYP2C9 substrates: potential modest changes in plasma concentrations.
  • Herbal supplements (St. John’s wort): enzyme induction may reduce efficacy.

Frequently Asked Questions

Montelukast Cristers is prescribed to manage asthma, relieve symptoms of allergic rhinitis such as nasal congestion and sneezing, and prevent exercise‑induced bronchoconstriction. It works by targeting leukotriene‑mediated inflammation, helping to keep the airways open and reduce allergic responses.

Montelukast blocks the cysteinyl leukotriene receptor CysLT1, which prevents leukotrienes from binding and triggering bronchoconstriction, mucus production, and airway swelling. By inhibiting this pathway, the drug reduces airway inflammation and hyper‑responsiveness, improving breathing in asthma and related allergic conditions.

The appropriate dose of Montelukast Cristers is determined by the prescribing clinician based on the patient’s age, condition severity, and response to therapy. Healthcare professionals follow established guidelines to select the correct strength and dosing schedule for each individual.

Montelukast is classified as Pregnancy Category B, indicating no evidence of risk in animal studies and limited human data. It may be used during pregnancy if the potential benefit justifies the risk. The drug is excreted in breast milk; clinicians should weigh benefits against possible effects on 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 and inhaled corticosteroids target different aspects of asthma management. Montelukast blocks leukotriene‑mediated inflammation, useful for patients with mild‑moderate disease or those who cannot tolerate steroids. Inhaled corticosteroids reduce airway inflammation more broadly and are often first‑line for persistent asthma. Choice depends on disease severity, patient preference and physician assessment.

Montelukast Cristers should be stored at ambient temperature, preferably below 25 °C. Keep the tablets in their original container, protect them from moisture, heat and direct sunlight to maintain potency throughout the shelf life.

Montelukast Cristers 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 instructions provided by their healthcare professional.

Serious risks include neuropsychiatric events such as depression, anxiety, suicidal thoughts, and rare allergic reactions like anaphylaxis or Stevens‑Johnson syndrome. Patients should be monitored for mood changes or skin reactions, and any concerning symptoms should be reported to a healthcare provider promptly.

Montelukast Cristers is contraindicated in individuals with known hypersensitivity to montelukast or any component of the formulation. Caution is advised for patients with a history of severe psychiatric disorders, liver disease, or those taking interacting medications that may alter its effectiveness.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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