Лекарствата, които могат да понижат кръвните нива на позаконазол, включват: • Рифабутин и рифампицин (използвани за лечение на някои инфекции).
If you are already being treated with rifabutin, your blood counts and some possible side effects to rifabutin will need to be monitored. • Some medicines used to treat or prevent fits, such as phenytoin, carbamazepine, phenobarbital, primidone. • Efavirenz, which is used to treat HIV infection.