Nucleoside analogue antifungals are used to treat serious fungal infections like cryptococcal meningitis and systemic candidiasis. They also have other uses, such as treating certain other yeast infections in the body. These medications work by interfering with the fungal cell's ability to make DNA and essential proteins. This stops the fungus from growing and spreading. Nucleoside analogue antifungals are available in oral forms, making them convenient to take. An example is flucytosine (Ancobon). These medications help fight the infection effectively.