Used primarily as an antifungal medication, it treats a wide range of fungal infections including aspergillosis, blastomycosis, and onychomycosis. It is effective in both systemic and superficial infections due to its broad spectrum of activity. Commonly prescribed for long-term treatment of nail fungus, it penetrates keratinized tissues well, such as skin, nails, and hair. Also used in immunocompromised patients to prevent fungal complications. Available in oral and intravenous forms, it plays a key role in managing life-threatening fungal diseases when other treatments are not suitable.