It is best to consult a medic because it is important to determine the underlying cause, what type of fungus is causing your problem, how bad or advanced the infection is, etc. For instance, some have asked me to talk about Zetaclear and I checked it out and it has a good amount of feedback but no evidence. However, the feedback is very mixed and there is a reason for that. If it really does have the ingredients it claims, tea tree oil, jojoba, almond oil and so on, it should have some effect because of tea tree oil, for instance, is antifungal and so are some of its other ingredients. However, there is no info on doses and it may only work in very mild cases of athlete's foot/toenail fungus. https://diets-usa.com/zetaclear-reviews