1. 
   zafirlukast
   (zә-fir´loo-kast) a leukotriene receptor antagonist used in treatment of asthma, administered orally.
   Found op http://www.encyclo.co.uk/local/21001
   
   
2. 
   zafirlukast
   Type: Term Pronunciation: za′fir-lū′kast Definitions: 1. A blocker of leukotriene D₄ and E₄ (LTD₄ and LTE₄) components of a slow-reacting substance of anaphylaxis (SRSA); used for the prophylaxis of asthma attacks.
   Found op http://www.medilexicon.com/medicaldictionary.php?t=100338
   
   
3. 
   zafirlukast
   A drug used to prevent and treat symptoms of asthma. It blocks substances that cause inflammation in the lungs. It is a type of antiasthmatic agent and a leukotriene receptor antagonist. Also called Accolate.
   Found op http://www.cancer.gov/dictionary?expand=Z
   
   

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