Voriconazole is an antifungal medication used to treat serious fungal infections, particularly those caused by Aspergillus species and other molds. It works by inhibiting the growth of fungi, helping the immune system to eliminate the infection. Voriconazole is often prescribed for patients with weakened immune systems, such as those undergoing chemotherapy or organ transplants. This medication is available in both oral and intravenous forms, allowing for flexible administration based on the patient's needs. Common side effects may include visual disturbances, rash, and liver enzyme changes. Regular monitoring is essential to ensure safety and effectiveness during treatment.