Isavuconazole Treatment Guidelines

Dosing Regimen

• The Infectious Diseases Society of America recommends isavuconazole administration at 200 mg every 8 hours for 6 doses, followed by 200 mg daily for maintenance therapy 1
• Loading dose: 200 mg every 8 hours for 6 doses is recommended for the first 48 hours 1
• Maintenance dose: 200 mg once daily is recommended, starting after completion of the loading regimen 1

Duration of Therapy

• For invasive aspergillosis, treatment should continue for a minimum of 6-12 weeks, as recommended by the Infectious Diseases Society of America 1, 2
• Treatment duration should be individualized based on clinical response to therapy, resolution or stabilization of radiographic findings, degree and duration of immunosuppression, and site of infection, according to the Infectious Diseases Society of America 1, 2

Efficacy and Indications

• Isavuconazole is FDA-approved for the treatment of invasive aspergillosis, as stated by the Centers for Disease Control and Prevention 1
• For invasive aspergillosis, isavuconazole is considered a first-line therapy option alongside voriconazole, as recommended by the Infectious Diseases Society of America 1

Clinical Pearls

• For CNS aspergillosis, awareness of potential drug interactions between anticonvulsants and triazoles is crucial, as noted by the Infectious Diseases Society of America 1, 2
• Surgical debridement should be considered as adjunctive treatment to antifungal therapy for mucormycosis when possible, as recommended by the Infectious Diseases Society of America 2

Combination Therapy

• Primary combination therapy is not routinely recommended for invasive aspergillosis, as stated by the Infectious Diseases Society of America 1
• For refractory cases or salvage therapy, combination with another antifungal class may be considered, according to the Infectious Diseases Society of America 1