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Table 2 Drug interactions with voriconazole.-

From: Pharmacology and metabolism of voriconazole and posaconazole in the treatment of invasive aspergillosis-review of the literature

Drug Management
Decreases voriconazole interactions  
Rifampin contraindicated
Rifabutin contraindicated
Phenytoin monitoring
Carbamazepine contraindicated
Long-acting barbiturates contraindicated
Ritonavir contraindicated
Efavirenz contraindicated
Increases in concentration by voriconazole
Sirolimus contraindicated
Rifabutin contraindicated
Efavirenz contraindicated
Quinidine contraindicated
Tacrolimus monitoring
Cyclosporine monitoring
Omeprazole reduce dose by half
Warfarin monitoring
Methadone reduce dose
Likely increases in concentration by voriconazole
Ergot alkaloids contraindicated
Pimozide contraindicated
Sulfonylureas monitoring
HMG-CoA reductase inhibitors monitoring
Vinca alkaloids monitoring
Calcium channel blockers monitoring
Benzodiazepines monitoring
Prednisolone monitoring
HIV protease inhibitors, not indinavir monitoring