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Live data · NADAC + Part D CY24 · reviewed daily

Lamotirigine (Lamotrigine)

Lamotirigine prevents seizures by stabilizing electrical activity in the brain.

First FDA approval2020-05-14
Generic availableNo (brand-only)
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 schema9 entries indexed · 4 visible
What is Lamotirigine used for?

Lamotirigine prevents seizures by stabilizing electrical activity in the brain.

Is there a generic for Lamotirigine?

No. Lamotirigine is brand-only with no generic equivalents currently in market.

How much does my plan pay for Lamotirigine?

NADAC pricing data not currently available for this drug.

Is Lamotirigine on the FDA shortage list?

No. Lamotirigine 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.

Anti-epileptic Agent6 alternatives in D1
01
Ethosuximide
Brand: Zarontin
$0.092Lowest NADAC
8Generic mfrs
$2.3MCY24 Part D spend
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02
Felbamate
Brand: Felbatol
$0.368Lowest NADAC
5Generic mfrs
$20.0MCY24 Part D spend
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03
Lamotrigine
Brand: LAMICTAL
$0.029Lowest NADAC
22Generic mfrs
$327.2MCY24 Part D spend
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04
Lamotrigine Chewable Dispersible
Brand: lamotrigine
Lowest NADAC
0Generic mfrs
CY24 Part D spend
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05
Lamotrigine Er
Anti-epileptic Agent
$0.371Lowest NADAC
0Generic mfrs
CY24 Part D spend
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06
Lamotrigine Extended Release
Anti-epileptic Agent
$0.371Lowest 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 · 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.