Itraconazole is an antifungal medication used to treat various fungal infections, including those caused by Aspergillus and Candida species. It works by inhibiting the growth of fungi, helping the immune system to eliminate the infection. Itraconazole is available in capsule and liquid forms and is often prescribed for infections that do not respond to other treatments. This medication is typically taken orally and may require monitoring of liver function due to potential side effects. Patients should inform their healthcare provider about any other medications they are taking, as itraconazole can interact with various drugs, affecting their effectiveness or increasing side effects.