Itraconazole and Corticosteroid Interactions

Clinical Considerations

• The American College of Clinical Pharmacology recommends considering therapeutic drug monitoring for itraconazole to avoid excessive serum concentrations when co-administered with triamcinolone, with high strength of evidence 1, 2
• Patients with genetic polymorphisms affecting CYP3A4 enzymes may experience a more pronounced interaction between itraconazole and triamcinolone, according to the Clinical Infectious Diseases guidelines 2

Management Recommendations

• The Infectious Diseases Society of America suggests monitoring for signs and symptoms of corticosteroid excess, including Cushing's syndrome, adrenal suppression, and psychiatric disturbances, when itraconazole and triamcinolone are co-administered 1, 2