Diflucan (fluconazole) is an efficient treatment for fungal infections. It belongs to the group of drugs called triazoles and works by slowing down the growth of fungi that caused the infection. How long you will have to take this medicine depends on the condition you are going to be treated for. Some people need to take just one dose, while others require several weeks of treatment or even longer. You need to follow your doctor’s recommendations carefully, as this is the only way you will benefit from the treatment. Do not take a double dose unless otherwise recommended by your health care provider.