To treat fungal infections of the foot, Dr. Oz says you have to take a pill by mouth. "That pill does have one side effect: It can cause liver failure. So we don't use it a lot, and you've got to be careful about using it, because it doesn't save your life, right? No one dies from toe fungus."
To avoid foot fungus in the first place, keep your toes dry and try to expose them to the sun, Dr. Oz says. Many people who think they have fungus actually just have an infection around the nail. Dr. Oz recommends soaking your foot in vinegar or tea tree oil to cure those infections.