What is the best remedy to cure a toe nail fungus?

Drugs. Usually onychomycosis persists life long unless treated with an effective anti-fungal agent such as terbinafine or itraconazole which have replaced the more toxic griseofulvin. You need a doctor's prescription for the oral meds laser treatments are now being offered.
We can try! Toenail fungus is very common, and unfortunately very difficult to cure 100%. We can test the nail to see if it is a callused or traumatized nail or if it is indeed fungus, and from there you have several options: topical or oral antifungal medications, laser nail treatment, or removal of the nail in severe cases. See your doctor to talk about which treatment is right for you.