Fluconazole is part of a drug class known as azole antifungals. This drug is used to treat yeast infections, fungal infections, and thrush. Fluconazole helps to slow down the growth of fungus. Fluconazole is a drug used in the treatment of fungal infections. More specifically, fluconazole is used to treat Candida infections - such as that affecting the mouth, vagina, or bloodstream. Fluconazole works by preventing the conversion of lanosterol to ergosterol, the latter compound being responsible for holding the fungal cell membrane together. By disturbing ergosterol synthesis, the wall becomes compromised - meaning cells lyse and die. Fluconazole is available in oral, topical, and intravenous formulations and is mostly eliminated from the body through the urine. Common side effects with fluconazole include taste disturbances, stomach pain, headache, and dizziness. It may also cause skin rash and unusual bleeding.