Diflucan is available as a tablet or as an oral suspension (liquid).ĭiflucan is used to treat infections caused by fungus, which can invade any part of the body including the mouth, throat, esophagus, lungs, bladder, genital area, and the blood.ĭiflucan is also used to prevent fungal infection in people who have a weak immune system caused by cancer treatment, bone marrow transplant, or diseases such as AIDS.ĭiflucan is also used to treat a certain type of meningitis in people with HIV or AIDS. Last updated on Mar 7, 2021.ĭiflucan ( fluconazole) is an oral (taken by mouth) antifungal medicine. Medically reviewed by Sophia Entringer, PharmD. Generic name: fluconazole (floo KOE na zole)