Den relativt hyppige forekomst af diarré under ritonavirbehandling kan hæmme optagelsen og virkningen (på grund af nedsat compliance) af ritonavir eller andre lægemidler, der indtages samtidig.
The relatively high frequency of diarrhoea during treatment with ritonavir may compromise the absorption and efficacy (due to decreased compliance) of ritonavir or other concurrent medications.