Can tincture of iodine be applied to gray nail (fungal nail)?

Onychomycosis can be treated with iodophor. Iodophor can kill bacterial propagules, fungi, and some viruses. It is recommended that patients apply iodophor externally every day, which can be effective for mild cases of onychomycosis. Common treatments include oral and topical medications, with oral drugs such as itraconazole and terbinafine being frequently used. Antifungal treatment must be carried out strictly according to medical instructions, and treatment interruptions or non-standard regimens should be avoided during the course of therapy.