Viewing data from:

LAMICTAL XR

NDA

LAMOTRIGINE | N022115 | GLAXOSMITHKLINE LLC

6 strengths1 unique patent0 unique exclusivities

Patent Timeline

1 unique patent by expiration date

Active (1)Today

2027

2028

2029

Today

8637512

Jan. 7, 2029

PTAB Proceedings

No IPR/PGR/CBM challenges found at the Patent Trial and Appeal Board

Patent Reexaminations

No ex parte or inter partes reexamination proceedings found at USPTO

Hatch-Waxman Litigation

1 case on OB patents from PACER

Case	Court	Filed	Status	Judge
Glaxo Group Ltd. et al v. Aurobindo Pharma USA, Inc. et al 1:2017cv01862 2 patentsANDA 211054Lamotrigine	D. Del.	2017-12-27	Terminated 2018-02-06	—

Source: PACER. NOS 835 (Patent - Abbreviated New Drug Application).

Citizen Petitions

No FDA citizen petitions matched from Regulations.gov

Clinical Trials

No clinical trials found on ClinicalTrials.gov for this drug

Medicare Part D Spending

CMS annual spending data for Lamictal XR (2023)

Total Spending

$52.7M

Total Claims

16,023

Beneficiaries

1,940

Avg Cost/Unit

$36.39

Spending Trend

$45.6M(2019)→$47.6M(2020)→$48.4M(2021)→$51.1M(2022)→$52.7M(2023)

YoY Change:+9.6%

5yr CAGR:+6.9%

Source: CMS Medicare Part D Spending by Drug (2023). Shows gross drug cost under Part D.

API Supply Chain24 active DMFs9 inactive

22 active API suppliers hold Drug Master Files for this ingredient.

TAPI NL BVLAMOTRIGINE

DMF 159242002

JUBILANT BIOSYS LTDLAMOTRIGINE USP

DMF 161422002

COHANCE LIFESCIENCES LTDLAMOTRIGINE USP

DMF 162592002

DR REDDYS LABORATORIES LTDLAMOTRIGINE

DMF 164802003

MEDICHEM SALAMOTRIGINE

DMF 172312004

MATRIX PHARMACORP PRIVATE LTDLAMOTRIGINE USP

DMF 177402004

ZYDUS LIFESCIENCES LTDLAMOTRIGINE USP

DMF 180902005

CIPLA LTDLAMOTRIGINE USP

DMF 184212005

ALEMBIC PHARMACEUTICALS LTDLAMOTRIGINE USP

DMF 187322005

TARO PHARMACEUTICAL INDUSTRIES LTDLAMOTRIGINE USP

DMF 189602005

LUPIN LTDLAMOTRIGINE USP (MICRONISED)

DMF 198922006

APITORIA PHARMA PRIVATE LTDLAMOTRIGINE USP (NON-STERILE DRUG SUBSTANCE)

DMF 199082006

TORRENT PHARMACEUTICALS LTDLAMOTRIGINE USP

DMF 202892007

ZAKLADY FARMACEUTYCZNE POLPHARMA SALAMOTRIGINE

DMF 205482007

UNICHEM LABORATORIES LTDLAMOTRIGINE USP API

DMF 208352007

UNIMARK REMEDIES LTDLAMOTRIGINE USP

DMF 228132009

COHANCE LIFESCIENCES LTDLAMOTRIGINE USP

DMF 232512009

ZHEJIANG HUAHAI PHARMACEUTICAL CO LTDLAMOTRIGINE USP

DMF 232622009

SYNTHEXIM CALAIRE CHIMIELAMOTRIGINE DRUG SUBSTANCE

DMF 237402010

CTX LIFE SCIENCES PVT LTDLAMOTRIGINE USP

DMF 249582011

IOL CHEMICALS AND PHARMACEUTICALS LTDLAMOTRIGINE

DMF 266272012

SYN-TECH CHEM AND PHARM CO LTDLAMOTRIGINE USP

DMF 302702016

SMS PHARMACEUTICALS LTDLAMOTRIGINE USP

DMF 342902019

IOL CHEMICALS AND PHARMACEUTICALS LTDLAMOTRIGINE USP

DMF 365312021

CF PHARMA LTDInactiveLAMOTRIGINE

DMF 181372005

GEDEON RICHTER LTDInactiveLAMOTRIGINE

DMF 183532005

SUN PHARMACEUTICAL INDUSTRIES LTDInactiveLAMOTRIGINE USP

DMF 183562005

UNION QUIMICO FARMACEUTICA SA (UQUIFA)InactiveLAMOTRIGINE

DMF 184392005

APOTEX PHARMACHEM INDIA PVT LTDInactiveLAMOTRIGINE

DMF 201292007

CAMBREX PROFARMACO MILANO SRLInactiveLamotrigine

DMF 211052007

ALKEM LABORATORIES LTDInactiveLAMOTRIGINE

DMF 213902008

SEQUEL PHARMACHEM PRIVATE LTDInactiveLAMOTRIGINE EP

DMF 226562009

WATERSTONE PHARMACEUTICALS HUBEI TIANMEN CO LTDInactiveLAMOTRIGINE

DMF 257752011

Source: FDA Drug Master Files (fda.gov). Type II API DMFs matched by ingredient.

Approval Letters

25 letters from Drugs@FDA

Date	Submission	Document
Oct 15, 2025	SUPPL -34	View Letter (PDF)
Oct 15, 2025	SUPPL -33	View Letter (PDF)
May 1, 2025	SUPPL -31	View Letter (PDF)
May 1, 2025	SUPPL -32	View Letter (PDF)
Apr 1, 2021	SUPPL -29	View Letter (PDF)
Oct 14, 2020	SUPPL -24	View Letter (PDF)
Sep 1, 2020	SUPPL -27	View Letter (PDF)
Sep 26, 2019	SUPPL -26	View Letter (PDF)
Aug 15, 2019	SUPPL -25	View Letter (PDF)
Jul 24, 2018	SUPPL -22	View Letter (PDF)
Jul 6, 2018	SUPPL -23	View Letter (PDF)
Mar 25, 2015	SUPPL -18	View Letter (PDF)
Mar 25, 2015	SUPPL -11	View Letter (PDF)
Jan 7, 2015	SUPPL -4	View Letter (PDF)
Jan 7, 2015	SUPPL -14	View Letter (PDF)
Jun 12, 2014	SUPPL -19	View Letter (PDF)
Dec 26, 2013	SUPPL -3	View Letter (PDF)
Aug 2, 2012	SUPPL -17	View Letter (PDF)
Dec 2, 2011	SUPPL -16	View Letter (PDF)
Aug 8, 2011	SUPPL -13	View Letter (PDF)
Jun 27, 2011	SUPPL -15	View Letter (PDF)
Apr 28, 2011	SUPPL -6	View Letter (PDF)
Apr 19, 2010	SUPPL -5	View Letter (PDF)
Apr 19, 2010	SUPPL -1	View Letter (PDF)
Jun 10, 2009	ORIG -1	View Letter (PDF)

Source: Drugs@FDA application documents.

Products (6)

Sort:

#001 — 25MG

RLDAB

1 patent0 exclusivities▴

TABLET, EXTENDED RELEASE;ORAL | Approved: May 29, 2009

Patents (1)

Patent #	Expiration	PED	Drug Substance	Drug Product	Use Code	Delist
8637512	Jan 7, 2029	—	—	Yes	—	—

#002 — 50MG

RLDAB

1 patent0 exclusivities▾

TABLET, EXTENDED RELEASE;ORAL | Approved: May 29, 2009

#003 — 100MG

RLDAB

1 patent0 exclusivities▾

TABLET, EXTENDED RELEASE;ORAL | Approved: May 29, 2009

#004 — 200MG

RLDAB

1 patent0 exclusivities▾

TABLET, EXTENDED RELEASE;ORAL | Approved: May 29, 2009

#005 — 300MG

RLDAB

1 patent0 exclusivities▾

TABLET, EXTENDED RELEASE;ORAL | Approved: Apr 14, 2010

#006 — 250MG

RLDAB

1 patent0 exclusivities▾

TABLET, EXTENDED RELEASE;ORAL | Approved: Jun 21, 2011