Cytochrom P450- CYP1A2 og P450- CYP2D6 bidrager til dannelsen af N- desmethyl og 2- hydroxymethyl metabolitterne, der udviser signifikant mindre in vivo farmakologisk aktivitet end olanzapin i dyreundersøgelser.
Cytochromes P450- CYP 1A2 and P450-CYP2D6 contribute to the formation of the N-desmethyl and 2-hydroxymethyl metabolites, both exhibited significantly less in vivo pharmacological activity than olanzapine in animal studies.