Hos patienter med alvorlig nedsat nyrefunktion og/ eller leverfunktion, er samtidig administration af Ketek og stærke CYP3A4 hæmmere, såsom protease hæmmere eller ketoconazol, kontraindiceret.
In patients with severely impaired renal and/ or hepatic function, concomitant administration of Ketek and strong CYP3A4 inhibitors, such as protease inhibitors or ketoconazole, is contraindicated.