<prompt> All of the following statements about phenytoin are true except:It follows Saturation kineticsAnti-seizure activity closely resembles plasma concentrationDoes not depress CNSCerebellar degeneration occurs on long-term administration  <response>: Phenytoin is not a CNS depressant; some sedation occurs at therapeutic doses, but this does not increase fuher with dose; rather toxic doses produce excitement and muscular rigidity. REF: ESSENTIALS OF MEDICAL PHARMACOLOGY KD TRIPATHI 8TH ED. 