- Systemic use of drugs known to induce (e.g. rifampicin, St. John's Wort, carbamazepine) or to inhibit (e.g. azole antimycotics, macrolides) CYP3A4 within 7 days prior to first trial drug administration until last PK-sampling in the trial. Exception: allowed is the intake of corticosteroids as docetaxel (pre)medication