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Famvir (Famciclovir) - Summary



Famvir® (famciclovir) contains famciclovir, an orally administered prodrug of the antiviral agent penciclovir.

Famvir® (famciclovir) is indicated for the following:

Herpes Zoster: Famvir® (famciclovir) is indicated for the treatment of acute herpes zoster (shingles).

Herpes Simplex Infections: Famvir is indicated for:

  • treatment or suppression of recurrent genital herpes in immunocompetent patients.
  • treatment of recurrent mucocutaneous herpes simplex infections in HIV-infected patients.

See all Famvir indications & dosage >>


Published Studies Related to Famvir (Famciclovir)

Evaluation of orally administered famciclovir in cats experimentally infected with feline herpesvirus type-1. [2011.01]
OBJECTIVE: To evaluate orally administered famciclovir for treatment of cats with experimentally induced disease attributable to feline herpesvirus type-1 (FHV-1)...

One-day famciclovir vs. placebo in patient-initiated episodic treatment of recurrent genital herpes in immunocompetent Black patients. [2010.03]
BACKGROUND: There are no known racial differences in genital herpes disease pathogenesis or response to therapy. Despite high herpes simplex virus (HSV) seroprevalence in Black persons, clinical trials investigating the treatment of recurrent genital herpes (RGH) have typically enrolled a small proportion of Black patients... CONCLUSION: This study showed similar efficacy and tolerability of 1-day treatment with famciclovir 1000 mg twice-daily compared to placebo in immunocompetent Black adults with RGH. Famciclovir has proven efficacy and safety in the overall RGH population. Further understanding of the efficacy of antiherpes therapy in Black patients with recurrent genital herpes may be warranted.

One-day famciclovir vs. placebo in patient-initiated episodic treatment of recurrent genital herpes in immunocompetent Black patients. [2010]
Black patients... CONCLUSION: This study showed similar efficacy and tolerability of 1-day

Single-day famciclovir for the treatment of genital herpes: follow-up results of time to next recurrence and assessment of antiviral resistance. [2009.02]
BACKGROUND: Episodic therapy of genital herpes is usually recommended for patients with infrequent symptomatic recurrences and where transmission is not a concern. While shorter courses are as effective as standard 5-day regimens, it is unknown whether abbreviated therapy has detrimental effects on natural history and the development of antiviral resistance. OBJECTIVES: To assess time to next recurrence and development of antiviral resistance in patients with recurrent genital herpes treated with either single-day famciclovir (1 g twice-daily) or 3-day valacyclovir (500 mg twice-daily)... CONCLUSION: Treatment with single-day famciclovir for recurrent genital herpes did not shorten the time to the next recurrence. Drug resistance to penciclovir continues to be a rare event in immunocompetent patients.

Pharmacokinetics and safety of penciclovir following oral administration of famciclovir to cats. [2007.11]
OBJECTIVE: To investigate penciclovir pharmacokinetics following single and multiple oral administrations of famciclovir to cats.Famciclovir dosages of 15 mg/kg administered every 8 hours to cats are unlikely to result in plasma penciclovir concentrations with activity against feline herpesvirus-1.

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Clinical Trials Related to Famvir (Famciclovir)

Famvir for Treatment of Hearing in Unilateral Meniere's Disease [Recruiting]
The specific aim of this study is to determine the efficacy of treatment with famciclovir in unilateral Meniere's Disease patients, specifically whether hearing can be improved. The investigators will determine the percentage of unilateral Meniere's Disease patients experiencing an absence of hearing fluctuation after 3 months of treatment with famciclovir as compared to the placebo arm.

Famciclovir Pediatric Formulation in Children 1 to 12 Years of Age With Herpes Simplex Infection [Completed]
Herpes simplex virus causes cold sores (fever blisters) and can lead to painful lesions in the mouth in healthy children. Children with impaired immune systems might develop severe complications. Famciclovir is a drug approved to treat herpes simplex and varicella zoster infection in adults. This study will evaluate the safety and blood levels of a new pediatric formulation of Famvir in children 1-12 years of age.

Efficacy and Safety of Oral Famciclovir in Patients With Active Recurrent Genital Herpes [Completed]
This is a phase III, multicenter, randomized, double-blind, parallel-group study to compare the efficacy and safety of a two-day treatment with famciclovir (500 mg loading dose followed by 250 mg 12-hourly) to standard five-day treatment with famciclovir (125 mg 12-hourly) in patients with active recurrent genital herpes.

This study is not recruiting patients in the United States.

Famciclovir Oral Pediatric Formulation in Children 1-12 Years of Age With Varicella Zoster Infection [Completed]
Varicella zoster virus causes chickenpox in children and shingles in adults. Chickenpox is usually a self-limiting illness characterized by fever and a rash. Serious complications can include secondary bacterial infections, pneumonia, and encephalitis. Anti-viral treatment is not a standard of care in immunocompetent children, but is recommended whenever a risk of complication exists. This study will evaluate the safety and blood levels of a new formulation of famciclovir in children 1-12 years of age.

Pharmacokinetics, Acceptability and Safety of Famciclovir in Infants (1 Month to Less Than 12 Months) With Herpes Simplex Infection [Recruiting]
This study will evaluate the acceptability and safety of famciclovir in infants with herpes simplex infection

more trials >>

Reports of Suspected Famvir (Famciclovir) Side Effects

Loss of Consciousness (16)Rhabdomyolysis (8)Malaise (7)Dizziness (7)Fall (6)Convulsion (5)Cerebral Infarction (5)Altered State of Consciousness (5)Asthenia (5)Blood Pressure Decreased (5)more >>


Based on a total of 1 ratings/reviews, Famvir has an overall score of 6. The effectiveness score is 8 and the side effect score is 8. The scores are on ten point scale: 10 - best, 1 - worst.

Famvir review by 62 year old female patient

Overall rating:  
Effectiveness:   Considerably Effective
Side effects:   Mild Side Effects
Treatment Info
Condition / reason:   Chronic Fatigue - Epstein Barr Virus
Dosage & duration:   500 MG taken 3 x day for the period of 3 years
Other conditions:   IBS
Other drugs taken:   Previcid
Reported Results
Benefits:   The flare ups of fibromyalgia seemed to subside considerably. I was able to actually get out of bed during the day. I still, however, have bouts of pain; especially if I try to reduce the amount I take during the day.
Side effects:   Occasional upset stomach, dependency on taking the drug.
Comments:   Taken as a pill three times a day.

See all Famvir reviews / ratings >>

Page last updated: 2013-02-10

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