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U.S. Department of Health and Human Services


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Rilutek (riluzole) tablet

Detailed View: Safety Labeling Changes Approved By FDA Center for Drug Evaluation and Research (CDER) – November 2009


Summary View



Interstitial Lung Disease
  • Cases of interstitial lung disease (see ADVERSE REACTIONS) have been reported in patients treated with riluzole, some of them severe; upon further investigation, many of these cases were hypersensitivity pneumonitis. If respiratory symptoms develop such as dry cough and/or dyspnea, chest radiography should be performed, and in case of findings suggestive of interstitial lung disease or hypersensitivity pneumonitis (e.g., bilateral diffuse lung opacities), riluzole should be discontinued immediately. In the majority of the reported cases, symptoms resolved after drug discontinuation and symptomatic treatment.


Information for the Patient
  • Patients should be advised to report any cough or difficulties in breathing to their physicians


  • information regarding interstitial lung disease and hypersensitivity pneumonitis