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Live data · NADAC + Part D CY24 · reviewed daily

Alvimopan

Opioid Antagonist class · 3 generic manufacturers · 3 ANDAs filed at FDA.

First FDA approval2020-12-01
Generic availableYes · 3 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
Lowest NADAC
/unit
0 NDCs benchmarked, lowest of all strengths.
Average NADAC
Across all dosage forms in distribution.
Highest NADAC
Range is tight.
Plans with PA
0 / 329
Zero PA friction — switching is purely formulary.

Questions a plan sponsor actually asks.

FAQPage schema8 entries indexed · 4 visible
What is Alvimopan used for?

Alvimopan is a Opioid Antagonist medication tracked in Medicare Part D.

Is there a generic for Alvimopan?

Yes. 3 ANDAs filed at FDA, 3 generic manufacturers currently shipping.

How much does my plan pay for Alvimopan?

NADAC pricing data not currently available for this drug.

Is Alvimopan on the FDA shortage list?

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

4 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.

Opioid Antagonist2 alternatives in D1
01
Naloxone
Brand: KLOXXADO
$4.09Lowest NADAC
16Generic mfrs
$51.0MCY24 Part D spend
Compare →
02
Naltrexone
Brand: VIVITROL
$1.22Lowest NADAC
6Generic mfrs
$38.7MCY24 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 (3 approvals on file) · NADAC unit costs: CMS NADAC weekly file · Formulary tier and PA placement: CMS Part D Formulary file (329 plans) · Annualized spend, claims, beneficiaries: CMS Part D Spending Dashboard · Shortage status: FDA Drug Shortage Database · 340B exposure: HRSA OPAIS. Methodology and reproducibility notes on /methodology.