<prompt> Saturable kinetics is seen in:PhenvtoinDiazepamDigoxinBarbiturate  <response>: Ans: a Phenytoin Ref: KDT, 6 ed, p. 404Saturable kinetics is seen in phenytoin.Phenvtoin pharmacokinetics:Phenytoin is metabolised by hydroxylation glucuronide conjugation.Kinetics is capacity limited: it changes from first order to zero order over therapeutic range.Drugs showing zero order kinetics:Mnemonic: PET SHOP p-E-T-S-H-O-P-PhenytoinEthanolTolbutamideSalicylate- aspirintHeophyllineOral anticoagulant- warfarinPropanolol 