| add = quetiapine
| info =
* Risperidone is principally metabolized by CYP2D6 to an active metabolite.
* Quetiapine is principally metabolized by CYP3A4 to active and inactive metabolites.
| start =
* Start quetiapine according to the general dosing advice.{{IrrationalCombiAP}}
| cave =
* Quetiapine may have additive adverse cardiovascular effects in combination with other drugs that are known to prolong the QT interval of the electrocardiogram. <ref name="drugscomdrugscominteract">{{Drugscominteract|risperidone-with-quetiapine-2019-0-1979-0|risperidone|quetiapine}}</ref>
}}