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For immunocompetent adults with herpes zoster, use 500 mg every 8 hours at CrCl at least 60, every 12 hours at 40-59, and every 24 hours at 20-39 mL/min. Below 20, give 250 mg every 24 hours. In HD give 250 mg following each dialysis session.
Limits and monitoring
The usual course is seven days. Genital and orolabial herpes use different regimens. The primary source is a matched generic oral tablet label.
Before use
The RX source names Famvir. The separately linked prescribing information is for a generic famciclovir oral tablet of matching form and strength.
DailyMed SPL version 4, posted Jan 16, 2026 | Selected sections checked 2026-11-07. Independent clinical review pending.
Dose or interval guidance. Use only the product, indication, renal metric and population described in this source.
Renal guidance: 2.1 and 2.3, Table 1
Limits that apply to these rows
The usual course is seven days. Genital and orolabial herpes use different regimens. The primary source is a matched generic oral tablet label.
Oral famciclovir for herpes zoster in immunocompetent adults
CrCl (mL/min) or modality
Oral regimen
>=60
500 mg every 8 hours
40-59
500 mg every 12 hours
20-39
500 mg every 24 hours
<20, off HD
250 mg every 24 hours
Hemodialysis
250 mg after each session
Read the retained text before reformatting
For immunocompetent adults with herpes zoster, use 500 mg every 8 hours at CrCl at least 60, every 12 hours at 40-59, and every 24 hours at 20-39 mL/min. Below 20, give 250 mg every 24 hours. In HD give 250 mg following each dialysis session. The usual course is seven days. Genital and orolabial herpes use different regimens. The primary source is a matched generic oral tablet label.
Source revision: DailyMed SPL version 4, posted Jan 16, 2026 | Retrieved: 2026-11-07. Retrieval date is not the revision date.
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Source scope / renal recommendation differences
Famvir - product and source limitations
The RX source names Famvir. The separately linked prescribing information is for a generic famciclovir oral tablet of matching form and strength.
How to use this: The RX source names Famvir. The separately linked prescribing information is for a generic famciclovir oral tablet of matching form and strength.
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Locally stored source content
Original GlobalRPh protocol
Clinical facts and comments transcribed into a structured reading format. Read the original source for its complete context: https://globalrph.com/renal/famciclovir/
Usual Dosing (Adults)
Herpes zoster: 500 mg orally every 8 hours for 7 days. Recurrent genital herpes: 125 mg twice daily for 5 days. Primary genital herpes: 250 mg three times daily for 5 to 10 days. Chronic genital-herpes suppression: 250 mg twice daily.
The usual course is seven days. Genital and orolabial herpes use different regimens. The primary source is a matched generic oral tablet label.
Oral famciclovir for herpes zoster in immunocompetent adults
CrCl (mL/min) or modality
Oral regimen
>=60
500 mg every 8 hours
40-59
500 mg every 12 hours
20-39
500 mg every 24 hours
<20, off HD
250 mg every 24 hours
Hemodialysis
250 mg after each session
Read the retained text before reformatting
For immunocompetent adults with herpes zoster, use 500 mg every 8 hours at CrCl at least 60, every 12 hours at 40-59, and every 24 hours at 20-39 mL/min. Below 20, give 250 mg every 24 hours. In HD give 250 mg following each dialysis session. The usual course is seven days. Genital and orolabial herpes use different regimens. The primary source is a matched generic oral tablet label.
Renal method: Use the renal measure explicitly present in the RX passage. Source date: Mirror revision not established in the reviewed passage. Retrieved: 2026-11-07
Label mirror, not independent corroboration. This is selected locally stored RX List content. Full monograph import and current official-label review are not implied.
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Additional summaries stored on this page: 1 official-label, 1 RX List, 0 professional, 0 handbook. Empty additional-source groups are not shown. A missing layer is not a no-adjustment recommendation.
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The original individual GlobalRPh pages commonly cite NIH/NLM DailyMed and instruct readers to review the applicable package insert for updates. That historical reference is preserved as context; it is not counted as an independently retrieved current label.
