levamisole
noun
                                                                                                                            
                                                            le·vam·i·sole
                    
                                                                                                              
                                                                                                                                  lə-ˈva-mə-ˌsōl  
                                                      
                                                          
            
                                
              
          
                                                      : an anthelmintic drug C11H12N2S administered in the form of its hydrochloride that also possesses immunomodulatory properties and has been used especially in the treatment of colon cancer but is now withdrawn from use because of its link to serious blood disorders                                      
                
                    
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  Merriam-Webster unabridged




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