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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