Fungiset 400mg tablet is used In the Treatment of Fungal infections. Fungiset 400mg Tablet is an antifungal medicine. It works by killing and stopping the growth of fungi that causes the infection. It helps treat infections of the mouth, throat, vagina, and other parts of the body. The dose and duration of treatment will depend on what you are being treated for. Make sure you complete the full course of treatment. This will ensure that the infection is completely cured and prevent it from returning.