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Montelukast is used to prevent asthma

How it works

Montelukast works by blocking the action of leukotriene. Montelukast lowers inflammation in the airways and nasal passages to prevent asthma and relieve symptoms of allergies.

Common side effects

Running nose, Headache, Sinus inflammation, Cough, Abdominal pain, Pharyngitis, Otitis media (infection of ear), Influenza, Fever, Diarrhoea, Respiratory tract infection

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Expert advice

  • Do not take montelukast if you are allergic (hypersensitive) to montelukast or any of the other ingredients of montelukast.
  • Contact your doctor, if your asthma or breathing gets worse.
  • Montelukast is not meant to treat asthma attacks of short duration. If an attack occurs, it is advisable to always have your inhaled rescue medicine with you.
  • Take asthma medications prescribed only by doctor. Montelukast should not be substituted for other asthma medications your doctor has prescribed for you.
  • Consult your doctor if you get symptoms of flu-like illness, pins and needles or numbness of arms or legs, worsening of respiratory symptoms, and/or rash.
  • Consult your doctor before taking this drug if you are pregnant or breast feeding.

Frequently asked questions



What are the uses of montelukast/ Montek Lc/ Romilast?
Montelukast (also available as Montek Lc/ Romilast) is used to prevent and treat asthma, seasonal allergies (hay fever), and prevent exercise-induced asthma


Is montelukast steroid/antibiotic?
No. Monteleukast is an leukotriene receptor antagonist which is used as an anti-asthmatic drugs


Is montelukast harmful?
Montelukast is safe if used at prescribed doses for the prescribed duration as advised by your doctor

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Is montelukast gluten free?
Montelukast is gluten free. Please refer to package insert of the prescribed brand before use.

Content on this page was last updated on 13 February, 2017, by Dr. Varun Gupta (MD Pharmacology)