Diflucan (fluconazole) is an antifungal medication that can be used to treat infections caused by the presence of fungi that affect different parts of the body including mouth, lungs, bladder, genital area, throat, esophagus, and the blood. If you have kidney disease, liver disease, personal history of "Long QT syndrome, or heart rhythm disorder, additional tests may be required for you to safely take this medicine, or your health care provider will recommend an alternative. The liquid form of Diflucan may be stored in a fridge, just make sure it does not freeze. Any liquid form that is older than 2 weeks must be thrown away. The dose you will be prescribed will largely depend on the condition you are being treated for and can be from just a single pill to a double dose. Make sure you follow all the instructions provided by your health care provider. Your doctor is supposed to be aware of any medications you are using at the moment, especially any of the following ones: rifabutin, cyclosporine, seizure medications, sedatives, blood thinners, oral diabetes medicines, or theophylline, as interactions are possible unless the doses have been properly adjusted.