Det er sandsynligt, at ritonavir doseret som et antiretroviralt stof vil hæmme CYP2D6, og som følge heraf forventes det at øge koncentrationerne af desipramin, imipramin, amitriptylin, nortriptylin, fluoxetin, paroxetin eller sertralin.
Ritonavir dosed as an antiretroviral agent is likely to inhibit CYP2D6 and as a result is expected to increase concentrations of desipramine, imipramine, amitriptyline, nortriptyline, fluoxetine, paroxetine or sertraline.