You can go to your Dr. for a prescription for toenail fungus but it can be expensive. A natural way to cure it is to soak your feet in a solution of half water, half apple cider vinegar twice a day for 15 minutes. Make sure you keep your feet dry and clean. To speed the healing process, you can dab a bit of olive oil, with a cotton ball, on after you soak them. Gently rub it around your toes and nail bed.