in vitro kemm levetiracetam u kemm il prodott ewlieni tal metabolożmu ma fixklux l iżoformi taċ  ċitokromju p450 fil fwied (cyp3a4 2a6 2c9 2c19 2d6 2e1 u 1a2) glucuronyl transferase (ugt1a1 u ugt1a6) u l attivitajiet ta  l epoxide hydroxylase