Key facts about Montelukast
What dosages is Montelukast available in?
Montelukast is available as a 10 mg oral tablet, a 4 mg and 5 mg chewable tablet, and 4 mg oral granules.
What is Montelukast used for?
Montelukast is a leukotriene receptor antagonist and is used to treat the following:
- Seasonal allergies
- Year-round allergies
- Asthma
- Exercise-induced asthma
How does Montelukast work?
Montelukast is a leukotriene receptor antagonist, meaning it blocks substances in the body called leukotrienes. Leukotrienes can cause inflammation and swelling, and they play a role in causing asthma and allergy symptoms. By blocking leukotrienes, Montelukast helps your asthma or allergies.
How do I take Montelukast?
Montelukast is typically taken by mouth once daily. Your dose depends on the formulation of the medication and what you’re using it for.
- For asthma, Montelukast is typically taken in the evening
- For exercise-induced asthma, the medication is typically taken at least 2 hours before exercise
Is it safe for me to take Montelukast?
Montelukast is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you.
Montelukast Common Side Effects
Common side effects of Montelukast:
- Headache
- Fever
- Influenza-like symptoms
- Sore throat
- Cough
- Runny nose
- Sinus inflammation
- Belly pain
- Heartburn
- Diarrhea
Montelukast Serious Side Effects
Serious side effects are rare with Montelukast. Contact your healthcare provider immediately if you experience any of the following.
- Mental health disturbances: distress, aggressive behavior, anxiousness, depression, bad or vivid dreams, hallucinations, trouble sleeping, trouble with memory, obsessive-compulsive symptoms, restlessness, suicidal thoughts and behavior
Effects of other drugs, drug classes and over-the-counter products on Montelukast
- There are no major drug interactions listed for Montelukast. However, always let your physician and pharmacist know about any other medications or supplements (including prescribed and over-the-counter medications, vitamins, and dietary or herbal supplements) that you are currently taking
Who makes Montelukast?
Various FDA-approved generic manufacturers
Is Montelukast safe in pregnancy?
Available data from published prospective and retrospective cohort studies over decades with
Montelukast use in pregnant women have not established a drug-associated risk of major birth defects. You should talk to your healthcare provider before taking this medication if you are pregnant.
