Regarding phenytoin, false is:
*Phenytoin follows saturation kinetics (kinetics changes from first order to zero within therapeutic concentration), Zero order kinetics are seen at high doses. *It is also a potent enzyme inducer and can increase the metabolism of various drugs. *It is 80-90% plasma protein bound. REF: KATZUNG 14TH ED.
Induces microsomal enzymes
At very low doses, zero order kinetics occur
Higher the dose, higher is the half life
Highly protein bound
Central Nervous system