<unk>  is a nucleoside analogue DNA polymerase inhibitor that is FDA approved for the treatment of cold sores (herpes labialis), genital herpes, and herpes zoster.   Common adverse reactions include headache, nausea, and abdominal pain.
Valacyclovir
Acyclovir 
Penciclovir
Valganciclovir hydrochloride
Ganciclovir 
Famciclovir
Amantadine
Amantadine 