Amphetamine is known to inhibit monoamine oxidase, While the power of amphetamine and its metabolites to inhibit many P450 isozymes together with other enzymes hasn't been adequately elucidated. In vitro experiments with human microsomes suggest insignificant inhibition of CYP2D6 by amphetamine and minimal inhibition of CYP1A2, 2D6, and 3A4 by https://prosyntheticchems.com/product/adderall-xr/