Montelukast.

Overview

Montelukast is a leukotriene receptor antagonist used in certain asthma and allergy treatment plans.

It is important to check the exact formulation, country-specific label and whether the product was prescribed for you. Different brands and combinations may have different directions.

How it is used

Asthma and allergy-related uses. The choice of medicine, length of treatment and method of use are decided based on the clinical reason, other conditions and the specific approved product.

How it works

Montelukast blocks the cysteinyl-leukotriene type 1 (CysLT1) receptor, reducing certain inflammatory signals involved in airway narrowing and allergy symptoms. It is a controller or adjunct medicine, not a replacement for a rapid-relief inhaler during an asthma attack.

The exact therapeutic benefits and safety risks depend on the formulation, indication and person. Check the linked approved reference for clinical details.

Key safety points

It is not a rescue medicine for an acute asthma attack. Important neuropsychiatric warnings require discussion before and during use.

Do not use this website to select an individual dose. An approved label or healthcare professional should guide dosing and formulation changes.

Possible side effects

Mood or behavior changes, sleep disturbances and other mental health effects must be reported promptly.

This is not an exhaustive list. For a comprehensive side-effect list and warning signs, check the current product leaflet or official labeling.

Interactions and special situations

Review its boxed safety warnings with a clinician and discuss safer alternatives when appropriate.

Always give your clinician or pharmacist an up-to-date list of prescription medicines, over-the-counter products, supplements and known allergies.

Questions for your pharmacist

Why am I taking this medicine? How and when should I use my specific product? What should I do if I miss a dose? Which symptoms require urgent help? Are there interactions with my current medicines, foods or supplements? When should the treatment be reviewed?

Sources and review

This educational summary is a starting point only. The reference linked below provides more detailed information. Medical information changes and may differ by country; always confirm instructions with a current local approved label.