A fungicidal drug that can be used orally for the treatment of onychomycosis is:: (A) Griseofulvin, (B) Amphotericin B, (C) Clotrimazole, (D) Terbinafine
Answer is D. Fungicidal drugs are amphotericin B and terbinafine. Out of these, amphotericin B cannot be given orally. Thus, the answer is terbinafine.