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In the US, Montelukast (montelukast systemic) is a member of the drug class leukotriene modifiers and is used to treat Allergic Rhinitis, Asthma, Asthma - Maintenance, Bronchospasm Prophylaxis and COPD.

US matches:

UK matches:



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Antiasthmatic agent

Leukotrien receptor antagonist

Chemical Name

Cyclopropaneacetic acid, 1-[[[1-[3-[2-(7-chloro-2-quinolinyl)etenyl]phenyl]-3-[2-(1-hydroxy-1-metyletyl)phenyl]propyl]tio]metyl]-

Foreign Names

  • Montelukastum (Latin)
  • Montelukast (German)
  • Montélukast (French)
  • Montelukast (Spanish)

Generic Names

  • Montelukast (OS: BAN)
  • Montélukast (OS: DCF)
  • Montelukast Sodium (OS: USAN, BANM, JAN)
  • L 706631 (IS: Merck)
  • MK 0476 (IS: Merck)
  • MK 476 (IS: Merck)
  • Montélukast sodique (PH: Ph. Eur. 8)
  • Montelukast sodium (PH: Ph. Eur. 8)
  • Montelukast Sodium (PH: USP 37)
  • Montelukast-Natrium (PH: Ph. Eur. 8)
  • Montelukastum natricum (PH: Ph. Eur. 8)

Brand Names

International Drug Name Search


BANBritish Approved Name
BANMBritish Approved Name (Modified)
DCFDénomination Commune Française
ISInofficial Synonym
JANJapanese Accepted Name
OSOfficial Synonym
PHPharmacopoeia Name
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
USANUnited States Adopted Name

Click for further information on drug naming conventions and International Nonproprietary Names.

Important Notice: The international database is in BETA release. This means it is still under development and may contain inaccuracies. It is not intended as a substitute for the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that the use of any medication in any country is safe, appropriate or effective for you. Consult with your healthcare professional before taking any medication.