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Famvir (FAMCICLOVIR)

Novartis · FDA-approved approved Small molecule ✓ Verified May 2026 Quality 59/100

Famvir (generic name: FAMCICLOVIR) is a Herpes Simplex Virus Nucleoside Analog DNA Polymerase Inhibitor [EPC] Small molecule drug developed by Novartis. It is currently FDA-approved (first approved 1994) for Herpes simplex, Herpes zoster, Recurrent Mucocutaneous Herpes Simplex in Human Immunodeficiency Virus Infected Patients.

Famvir works by inhibiting the replication of herpes simplex virus DNA through its action as a nucleoside analog DNA polymerase inhibitor.

Famvir, also known as Famciclovir, is a small molecule that inhibits human herpesvirus 1 DNA polymerase. It is used to treat conditions such as Herpes Zoster, as indicated by ClinicalTrials.gov.

At a glance

Generic nameFAMCICLOVIR
SponsorNovartis
Drug classHerpes Simplex Virus Nucleoside Analog DNA Polymerase Inhibitor [EPC]
ModalitySmall molecule
Therapeutic areaImmunology
PhaseFDA-approved
First approval1994

Mechanism of action

Famciclovir is an orally administered prodrug of the antiviral agent penciclovir [see Microbiology (12.4)].

Approved indications

Common side effects

Drug interactions

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
FDA labelMechanism, indications, dosing, boxed warnings, drug interactions
ClinicalTrials.govTrial enrolment, design, endpoints, results

Competitive intelligence

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Frequently asked questions about Famvir

What is Famvir?

Famvir (FAMCICLOVIR) is a Herpes Simplex Virus Nucleoside Analog DNA Polymerase Inhibitor [EPC] drug developed by Novartis, indicated for Herpes simplex, Herpes zoster, Recurrent Mucocutaneous Herpes Simplex in Human Immunodeficiency Virus Infected Patients.

How does Famvir work?

Famvir works by inhibiting the replication of herpes simplex virus DNA through its action as a nucleoside analog DNA polymerase inhibitor.

What is Famvir used for?

Famvir is indicated for Herpes simplex, Herpes zoster, Recurrent Mucocutaneous Herpes Simplex in Human Immunodeficiency Virus Infected Patients, Recurrent genital herpes simplex, Recurrent herpes simplex labialis.

Who makes Famvir?

Famvir is developed and marketed by Novartis (see full Novartis pipeline at /company/novartis).

What is the generic name of Famvir?

FAMCICLOVIR is the generic (nonproprietary) name of Famvir.

What drug class is Famvir in?

Famvir belongs to the Herpes Simplex Virus Nucleoside Analog DNA Polymerase Inhibitor [EPC] class. See all Herpes Simplex Virus Nucleoside Analog DNA Polymerase Inhibitor [EPC] drugs at /class/herpes-simplex-virus-nucleoside-analog-dna-polymerase-inhibitor-epc.

When was Famvir approved?

Famvir was first approved on 1994.

What development phase is Famvir in?

Famvir is FDA-approved (marketed).

What are the side effects of Famvir?

Common side effects of Famvir include Headache, Nausea, Diarrhea, Vomiting, Fatigue, Abdominal Pain.

Related

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing