The preferred conventional oral treatment is Sporanox pulse therapy
daily for a week followed by a three week rest, repeated for three months. A clipped nail sample should be sent for culture before treatment. Expect a 60% to 70% cure rate. It’s unsafe for people with heart disease, may damage the liver, and interacts with other drugs. So your doctor has to watch carefully!
Consider tea tree oil, a safe natural over the counter remedy. It’s a powerful antibacterial and antifungal agent.