text: There are several possible potential benefits to chiral switching or chiral specific drugs. These include:
  #An improved (less complex, more selective) pharmacodynamic profile
  #A higher therapeutic index (improved safety margin)
  #Less complex pharmacokinetic profile, less complex drug interactions
  #Less complex relationship between plasma concentration and effect   
  #More rational therapeutic drug monitoring
  #Expose the patient to less body load and thus reduce metabolic/renal/hepatic drug load
  The chiral switching approach has sometimes resulted in failures and disappointments.