In March 2015, the extended-spectrum triazole antifungal isavuconazole was granted approval by the US Food and Drug Administration and the European Medicines Agency for the treatment of invasive aspergillosis and mucormycosis. Isavuconaozle has activity against a broad range of yeasts, dimorphic fungi, and molds and is associated with fewer toxicities than voriconazole. It also has predictable pharmacokinetics in adults, fewer drug-drug interactions than many existing antifungal agents, and is available in both oral and β-cyclodextrin-free intravenous formulations. In this review, we explore what is known about the pharmacokinetics and pharmacodynamics of isavuconazole and look ahead to its expanding applications in clinical practice.