Flumet 200 (Fluconazole) is used to treat serious fungal or yeast infections, including vaginal candidiasis, oropharyngeal candidiasis , esophageal candidiasis, other candida infections , or fungal meningitis. It is also used in children on life support called extracorporeal membrane oxygenation (ECMO). This medicine works by killing the fungus or yeast, or preventing its growth.