There is no single best medicine, as the right treatment depends entirely on where the infection is and what type of fungus is causing it. For common skin infections like athlete's foot or ringworm, topical creams containing clotrimazole, miconazole, or terbinafine are highly effective. For nail infections or more stubborn cases, oral medications like fluconazole or terbinafine are typically used. Because using the wrong treatment can delay healing, I highly recommend consulting a healthcare provider. They can properly examine the area and prescribe the exact medication you need to clear it up safely.