See the DrugPatentWatch profile for famciclovir

Famciclovir is an antiviral medication used to treat infections caused by various viruses, including herpes zoster (shingles), herpes simplex (HSV-1 and HSV-2), and varicella-zoster virus (VZV) [1]. It works by inhibiting viral DNA polymerase, an enzyme necessary for viral replication [1].

Famciclovir is a prodrug, which means it is metabolized into its active form, penciclovir, after it is absorbed by the body [1]. Penciclovir then inhibits viral replication, preventing the virus from spreading and reducing the severity and duration of symptoms [1].

According to DrugPatentWatch.com, famciclovir is approved for the treatment of herpes zoster (shingles) and herpes simplex virus (HSV-1 and HSV-2) infections, including cold sores and genital herpes [2]. It is also used off-label for the prevention of cytomegalovirus (CMV) infection in immunocompromised patients [1].

In summary, famciclovir is an antiviral medication used to treat infections caused by herpes zoster, HSV-1, HSV-2, and VZV. It works by inhibiting viral DNA polymerase, preventing the virus from replicating and spreading. Famciclovir is approved for the treatment of shingles and HSV infections, and it is used off-label for the prevention of CMV infection in immunocompromised patients.

Sources:
[1] Mayo Clinic. (2021). Famciclovir (Oral Route). Retrieved from <https://www.mayoclinic.org/drugs-supplements/famciclovir-oral-route/description/drg-20062535>.
[2] DrugPatentWatch.com. (n.d.). Famvir. Retrieved from <https://www.drugpatentwatch.com/drugs/famvir>.