Montelucaste Pensa (Montelukast Sodium)

Montelucaste Pensa, a leukotriene receptor antagonist, is used to treat conditions mediated by cysteinyl leukotrienes.

• Asthma: improves long‑term control of symptoms and reduces exacerbations in maintenance therapy.
• Seasonal allergic rhinitis: alleviates nasal congestion, sneezing and itching during pollen seasons.
• Perennial allergic rhinitis: reduces chronic nasal symptoms caused by year‑round allergens.

• Montelukast Sodium selectively blocks the cysteinyl leukotriene receptor type 1 (CysLT1) on airway smooth‑muscle cells, mast cells and eosinophils. By preventing leukotriene D4 and related mediators from binding, it inhibits bronchoconstriction, mucus secretion and inflammatory cell recruitment, thereby reducing airway hyper‑responsiveness and nasal mucosal edema. The antagonism also diminishes vascular permeability and cytokine release, contributing to overall anti‑inflammatory effects in the respiratory tract.

Montelucaste Pensa may cause adverse reactions that vary in frequency and severity.

Common Side Effects

• Headache: mild to moderate head pain that may be intermittent during treatment.
• Abdominal pain: discomfort or cramps in the stomach area, often transient.
• Cough: a dry, non‑productive cough that can appear early in therapy.
• Nasopharyngitis: mild cold‑like symptoms such as sore throat, runny nose and sneezing.

Serious or Rare Side Effects

• Angioedema: swelling of the face, lips, tongue or throat that can impair breathing and requires immediate medical attention.
• Mood changes: emergence of depression, anxiety or suicidal thoughts, warranting prompt evaluation.
• Hepatic enzyme elevation: increase in liver function test results, indicating possible liver stress.

When prescribing Montelucaste Pensa, consider the following precautions:

• Dose adjustment in hepatic impairment: reduce dose or monitor liver function.
• Psychiatric history: use caution in patients with depression or suicidal ideation.
• Hypersensitivity: avoid in individuals with known allergy to montelukast or excipients.
• Angioedema monitoring: watch for signs of facial or throat swelling.
• Pregnancy and lactation: discuss risk‑benefit ratio with the prescriber.
• Store at ambient temperature: keep in the original pack, protect from moisture and heat.

Montelucaste Pensa can interact with other medicines, requiring attention to the level of risk.

Major Interactions (Avoid)

• Rifampin: induces metabolism and reduces plasma levels of montelukast.
• Phenobarbital: may decrease montelukast efficacy through enzyme induction.
• Carbamazepine: can lower montelukast exposure, compromising therapeutic effect.

Moderate Interactions (Monitor Closely)

• SSRIs (e.g., fluoxetine): possible additive central nervous system effects.
• Warfarin: monitor INR as montelukast may affect its metabolism.
• Theophylline: observe for altered theophylline concentrations.