Voratex should not be taken by patients who are allergic to voriconazole or any of the other ingredients of this medicine (listed in Description).
The following medicines must not be taken during the course of Voratex treatment: Terfenadine; Astemizole; Cisapride; Pimozide; Quinidine; Ivabradine; Rifampicin; Efavirenz in doses of 400 mg and above once daily; Carbamazepine; Phenobarbital; Ergot alkaloids (e.g., ergotamine, dihydroergotamine); Sirolimus; Ritonavir in doses of 400 mg and more twice daily; St. John's Wort; Naloxegol; Tolvaptan; Lurasidone; Venetoclax.