Flucloxacillin results in suboptimal voriconazole plasma concentrations [PublishAheadOfPrint]

Combining voriconazole and flucloxacillin is indicated in patient cohorts experiencing both invasive aspergillosis and gram-positive infections (e.g. patients with chronic granulomatous disease or post-influenza pulmonary aspergillosis). We report a highly relevant interaction between voriconazole and flucloxacillin resulting in subtherapeutic voriconazole plasma concentrations in more than 50% of patients, posing a severe threat if not managed properly.

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