The best medicine for the Fungal infection will depend on what kind of Fungal Infection you have.
If it's a skin Fungal Infection then some antibiotic ointment either over the counter or by prescription will normally get rid of any fungal infection.
You can also Apply Apple Cider Vinegar to Fungal Infections on your skin such as Ringworm.
I've used Apple Cider Vinegar to get rid of Ringworm when I had it and it works great.
Just soak a cotton ball in some Apple Cider Vinegar and apply the Apple Cider Vinegar to your Ringworm or other Fungal infection twice per day until the Fungal infection goes away.