- Clinically indicated intake of the following medications: Corticosteroids, CYP3A4-Inhibitors (Itraconazol, Voriconazol, Fluconazol, Clarithromycin, Erythromycin, Indinavir, Nelfinavir, Ritonavir, Grapefruit juice), Beta-Blocker, Neuroleptics, Tricyclic Antidepressants,