Isavuconazole is an antifungal medication used to treat serious fungal infections in people with weakened immune systems. This study reviewed and analyzed three clinical trials to compare how well isavuconazole works compared to other antifungal drugs. The results showed that isavuconazole is just as effective as other antifungals but has fewer side effects, particularly fewer problems with liver health and drug-related adverse events. This makes isavuconazole a good alternative choice for patients who cannot use other antifungal medications or who are at risk of liver damage.