Famciclovir is prescribed for:
- Shingles (herpes zoster)
- Genital herpes (treatment and suppression)
- Recurrent cold sores
- Herpes simplex in HIV patients
Alternative to valacyclovir with similar efficacy.
Back to Medication Guide
Famciclovir
Generic Name: Famciclovir
Brand Names: Famvir
Famciclovir is an antiviral used for herpes zoster (shingles), genital herpes, and cold sores.
Antiviral
What It's Used For
Side Effects
Common side effects:
- Headache
- Nausea
- Diarrhea
- Fatigue
Serious side effects are rare but include confusion and hallucinations, especially with renal impairment.
Additional Information
What is Famciclovir?
Famciclovir is a prodrug of penciclovir, another antiviral in the same class as acyclovir.
Single-Dose Treatment
For recurrent cold sores, can be given as single 1500 mg dose at first sign of symptoms.
Renal Dosing
Requires dose adjustment in kidney disease as active metabolite is renally excreted.
Learn more at MedlinePlus.
Medical Disclaimer: This information is for educational purposes only and should not be considered medical advice. Always consult with your healthcare provider before starting, stopping, or changing any medication. Your doctor can provide personalized recommendations based on your specific health condition and medical history.
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