Medical Dictionary


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noun za·fir·lu·kast \zə-ˈfir-lü-ˌkast, ˌza-fir-ˈlü\

Medical Definition of zafirlukast

  1. :  a leukotriene antagonist C31H33N3O6S that is administered orally to inhibit bronchoconstriction in the treatment of asthma

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