A fungicidal drug that can be used orally for the treatment of onychomycosis is:
Fungicidal drugs are amphotericin B and terbinafine. Out of these, amphotericin B cannot be given orally. Thus, the answer is terbinafine.
Griseofulvin
Amphotericin B
Clotrimazole
Terbinafine
Anti-Fungal Drugs