Itraconazole 100 mg Capsule: Itraconazole (ICZ) is a broad-spectrum antifungal agent and belongs to the triazole group indicated in the treatment of local and systemic fungal infections e.g. treating fungal infections in the lungs that can spread throughout the body or treat fungal infections of the fingernails and toenails. It works by slowing the growth of fungi that cause infection. Itraconazole is also sometimes used to treat other types of fungal infections and to prevent fungal infections in people who have human immunodeficiency virus (HIV) or acquired immunodeficiency syndrome (AIDS).