Amphetamine is thought to inhibit monoamine oxidase, whereas the power of amphetamine and its metabolites to inhibit different P450 isozymes and also other enzymes hasn't been adequately elucidated. In vitro experiments with human microsomes show small inhibition of CYP2D6 by amphetamine and minor inhibition of CYP1A2, 2D6, and 3A4 by a number of m