There is no scientific evidence that proves apple cider vinegar can help to cure fungal infections of the feet, says About.com. The most effective treatments for toenail fungus are oral terbinafine and itraconazole, according to Mayo Clinic.
Terbinafine sells under the brand name Lamisil. Sporanox is the brand name of itraconazole. A typical treatment course runs six to 12 weeks. Side effects of oral antifungal drugs include skin rashes and liver damage, advises Mayo Clinic.
Symptoms of toenail fungus, also called onychomycosis or tinea unguium, include thickened, crumbling and brittle toenails, says MedlinePlus. Mild cases of toenail fungus that do not cause pain may not require any treatment, notes Mayo Clinic.