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Live data · NADAC + Part D CY24 · reviewed daily

Famciclovir

Herpes Simplex Virus Nucleoside Analog DNA Polymerase Inhibitor class · 5 generic manufacturers · 15 ANDAs filed at FDA.

First FDA approval2007-09-05
Generic availableYes · 5 mfrs
Shortage statusNone
340B exposureunknown
Last updated
NADAC: weekly (every Wed)Part D Formulary: quarterlyPart D Spend: annual (CY24)Orange Book: weeklyShortages: daily
At a glance · the numbers a plan sponsor wants on screen one

$9.4M in CY2024 Part D spend182K claims · 93K beneficiaries · 329 plans surveyed

Lowest NADAC
$0.270/unit
18 NDCs benchmarked, lowest of all strengths.
Average NADAC
$0.501
Across all dosage forms in distribution.
Highest NADAC
$0.832
Range is tight.
Plans with PA
0 / 329
Zero PA friction — switching is purely formulary.

Questions a plan sponsor actually asks.

FAQPage schema9 entries indexed · 4 visible
What is Famciclovir used for?

Famciclovir is a Herpes Simplex Virus Nucleoside Analog DNA Polymerase Inhibitor medication tracked in Medicare Part D.

Is there a generic for Famciclovir?

Yes. 15 ANDAs filed at FDA, 5 generic manufacturers currently shipping.

How much does my plan pay for Famciclovir?

Across 329 Part D plans, Famciclovir averages $0.501/unit (NADAC). Lowest available: $0.270/unit. Highest in distribution: $0.832/unit.

Is Famciclovir on the FDA shortage list?

No. Famciclovir is not currently on the FDA Drug Shortage Database.

5 additional drug-specific questions are indexed in the page's FAQPage schema for search engines and LLM crawlers, beyond what renders visually above. View page source for the complete JSON-LD.

Same class. Different math.

Herpes Simplex Virus Nucleoside Analog DNA Polymerase Inhibitor2 alternatives in D1
01
Acyclovir
Brand: Acyclovir suspension
$0.077Lowest NADAC
34Generic mfrs
$55.7MCY24 Part D spend
Compare →
02
Acyclovir and Hydrocortisone
Brand: Xerese
Lowest NADAC
0Generic mfrs
CY24 Part D spend
Compare →

Sources · every number above traces back.

Last refresh30 May 2026

Drug identity, dosage forms, brand names: openFDA NDC Directory · First approval, ANDA history: FDA Orange Book (10 approvals on file) · NADAC unit costs: CMS NADAC weekly file (18 NDCs benchmarked) · Formulary tier and PA placement: CMS Part D Formulary file (329 plans) · Annualized spend, claims, beneficiaries: CMS Part D Spending Dashboard (CY2024) · Shortage status: FDA Drug Shortage Database · 340B exposure: HRSA OPAIS. Methodology and reproducibility notes on /methodology.