摘要: Of the two clearly established drug oxidation polymorphisms, only one referred to as debrisoquine polymorphism affects many drugs. The known polymorphic substrates of mephenytoin hydroxylase are and mephobarbital. Relatively recently discovered propafenone, diltiazem, codeine. list contains 28 items. fate slightly less than half these is clinically affected in poor metabolizers, several latter drugs no longer marketed. There reasons why a failure metabolism may not alter sufficiently affect its clinical use. interest importance inhibition by inhibitors such quinidine some neuroleptics; also simultaneous use has led serious toxicity mutual metabolic inhibition. study polymorphisms been instructive for formal pharmacogenetics but understanding problems therapy patients without genetic defects.