Famciclovir has been shown to be very useful in the treatment of a wide range of viral illnesses, making it an important tool in clinical medicine. Herpes simplex virus (HSV) cases, both in the mouth and in the sexual area, are still the main focus of treatment. Herpes zoster, which is more commonly called "shingles," and cases caused by the varicella-zoster virus (VZV) can both be treated with famciclovir. Because famciclovir is a prodrug, it is...