Ketek bør ikke anvendes under og 2 uger efter behandling med CYP3A4 inducere (såsom rifampicin, phenytoin, carbamazepin, phenobarbital, St John´s wort).
Ketek should not be used during and 2 weeks after treatment with CYP3A4 inducers (such as rifampicin, phenytoin, carbamazepine, phenobarbital, St John’ s wort).