Product Information
LAMICTAL XR 50 MG TABLET is a brand product labeled by GlaxoSmithKline LLC, priced at $28.3219 per EA under NDC 00173075500. Its NADAC has been published 663 times since Nov 28, 2013.
FDA first approved this application on May 29, 2009. Its Orange Book therapeutic-equivalence code is AB — FDA rates it therapeutically equivalent to (substitutable for) its reference product.
The High Outlier badge above means this manufacturer's average price in the lamotrigine market falls above Q3 + 1.5·IQR across all competing manufacturers. We only apply this flag in markets with four or more competitors. Full definition: glossary → outlier.
Strength
50 mg/1
Manufacturer
GlaxoSmithKline LLCNDC
00173075500
Classification
Brand
Dosage Form
TABLET, FILM COATED, EXTENDED RELEASE
Route
ORAL
Effective Date
8/19/2026
Active Ingredients
LAMOTRIGINEApproval Type
New Drug (NDA)
FDA Application
NDA022115FDA Approved
5/29/2009
TE Code
AB
On Market Since
7/6/2009
Pharmacological Classes
Price Statistics
The NADAC for LAMICTAL XR 50 MG TABLET has been published 663 times since Nov 28, 2013, and over the history we have for it it has risen 142.1%. The table below summarizes its recorded NADAC range and movement.
| Current price | $28.3219 per EA |
|---|---|
| All-time high | $28.4145 (May 13, 2026) |
| All-time low | $11.6998 (Nov 28, 2013) |
| 52-week high | $28.4145 |
| 52-week low | $27.5473 |
| Median price | $22.1639 |
| Average price | $21.7666 |
| Largest weekly change | +15.0% (Jan 14, 2015) |
| Weeks tracked | 663 |
| Tracking since | Nov 28, 2013 |
Generic Alternatives
The matcher finds 1 manufacturer offering a NADAC-published product with this drug's active ingredient and strength in a comparable dosage form (cheapest from each manufacturer, up to 10 shown below). Switching to the cheapest would cut per-unit acquisition cost by roughly 52% at current NADAC. These are candidates to verify clinically, not guaranteed substitutes — see our generic drug prices guide.
Related Drugs
Same classification
Frequently asked questions
What is the NADAC price of LAMICTAL XR 50 MG TABLET?
The current National Average Drug Acquisition Cost (NADAC) for LAMICTAL XR 50 MG TABLET, manufactured by GlaxoSmithKline LLC, is $28.3219 per EA (NDC 00173075500), effective Aug 19, 2026.
How has the price of LAMICTAL XR 50 MG TABLET changed over time?
Over the history we have for it, the NADAC for LAMICTAL XR 50 MG TABLET has risen 142.1%. It has been tracked across 663 weekly CMS publications since Nov 28, 2013.
What are the highest and lowest recorded NADAC prices for LAMICTAL XR 50 MG TABLET?
Since Nov 28, 2013, the NADAC for LAMICTAL XR 50 MG TABLET has ranged from a low of $11.6998 (Nov 28, 2013) to a high of $28.4145 (May 13, 2026), with a median of $22.1639 per EA.
Are there cheaper alternatives to LAMICTAL XR 50 MG TABLET?
Yes. 1 manufacturer publishes a NADAC-priced product with the same active ingredient and strength in a comparable dosage form. The lowest-priced option, LAMICTAL ODT 50 MG TABLET, is $13.6529 per EA — about 52% below LAMICTAL XR 50 MG TABLET.
Who manufactures LAMICTAL XR 50 MG TABLET?
LAMICTAL XR 50 MG TABLET (NDC 00173075500) is labeled by GlaxoSmithKline LLC, and CMS classifies it as a brand product.