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Lamotrigine 2 MG Tablet for Oral Suspension [Lamictal] — RxCUI 542426

RxNorm drug concept · Semantic branded drug
RxCUI 542426 Semantic branded drug · SBD ● Current RxNorm concept 16 FDA products 18 package NDCs Snapshot Jul 14, 2026

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Compiled from public NLM RxNorm and FDA (openFDA NDC directory) data sources. Editorial policy

What you’re looking at: the standardized identity of one medicine, as the U.S. drug-data system sees it. Below — every FDA-listed product, package code, price benchmark, and billing code that maps to it.

🗂️ Key Facts

RxCUI542426
Official nameLamotrigine 2 MG Tablet for Oral Suspension [Lamictal]
Concept typeSemantic branded drug (SBD)
RxNorm statusCurrent RxNorm concept
Also known asLamictal 2 MG Tablet for Oral Suspension; Lamictal CD 2 MG Tablet for Oral Suspension
FDA products mapped16
Package NDCs mapped18
Reported Medicaid activity (SDUD)23,420 prescriptions · 38 state & territory Medicaid programs · latest period Q4 2025
RxNorm release07/06/2026
Snapshot dataJul 14, 2026

📖 Skip the Codes — Read It in Plain English.

Our pharmacist-built guide to Lamotrigine: what it is, how it’s used, side effects, and interactions.

📗 Our plain-language guide HelloPharmacist
  • I completely understand the impatience — but the slow ramp-up is one of the most important safety steps with lamotrigine. Going too fast significantly raises your risk of a serious...
  • Why does my doctor keep telling me to increase my dose so slowly? Can't we just get to the right dose faster?
  • That's a fair question, and the honest answer is: with lamotrigine, we can't reliably tell in advance which rashes are harmless and which are dangerous. So the rule is — call your...
  • What kind of rash should I worry about? I get skin reactions from all sorts of things.
📖 Read our full Lamotrigine guide →

🕸️ Concept Web — How Lamotrigine 2 MG Tablet for Oral Suspension [Lam... Connects

One RxCUI never lives alone. Follow the path from the raw ingredient down to the exact strength-and-form concepts FDA products carry — every stop is a real RxNorm concept with its own identifier. Hover or focus any chip for what it means.
This page's concept Lamotrigine 2 MG Tablet for Oral Suspension [Lamictal] RxCUI 542426

Every web starts here: one RxCUI, one fixed meaning in the RxNorm vocabulary.

  1. Ingredients 1

    The active substance itself — no strength, form, or brand attached yet.

    • Lamotrigine 28439
  2. Brand names 1

    The same medicine's trade names. A brand name alone says nothing about strength or form.

    • Lamictal 196502
  3. Dose forms 9

    The ingredient poured into a form — tablet, solution, cream — still without one fixed strength.

    • Lamotrigine Tablet for Oral Suspension 2697774
    • Lamotrigine Oral Liquid Product 2697773
    • Lamotrigine Oral Product 1162535
    • Lamotrigine Tablet for Oral Suspension [Lamictal] 2697777
    • Lamictal Oral Liquid Product 2697776
    • Lamictal Oral Product 1174986
    • Tablet for Oral Suspension 1861409
    • Oral Liquid Product 1151137
    • +1 more in this family
  4. Clinical & branded drugs 3

    Ingredient + strength + dose form. These are the concepts real FDA products actually carry.

Showing up to 8 concepts per family — 13 of 14 stored related concepts drawn.
These are official RxNorm vocabulary relationships — how concepts name and organize the same medicine. They do not establish therapeutic equivalence or substitutability: two concepts appearing in one web is never a statement that products can be swapped.

🔀 Generic ⇄ Brand Crosswalk

The same medicine has an unbranded (generic) identity and one or more brand-name identities — each with its own RxCUI. This is a naming relationship in RxNorm, not a statement that any two products are substitutable.

Generic (Clinical) Concepts

  • Lamotrigine 2 MG Tablet for Oral Suspension SCD · 349010
  • Lamotrigine 2 MG SCDC · 350517
  • Lamotrigine Tablet for Oral Suspension SCDF · 2697774
  • Lamotrigine Oral Liquid Product SCDG · 2697773
  • Lamotrigine Oral Product SCDG · 1162535

Brand-Name Concepts

  • Lamotrigine 2 MG [Lamictal] SBDC · 542425
  • Lamotrigine Tablet for Oral Suspension [Lamictal] SBDF · 2697777
  • Lamictal Oral Liquid Product SBDG · 2697776
  • Lamictal Oral Product SBDG · 1174986
  • Lamictal BN · 196502

📦 FDA Products & Package NDCs

16 products · 18 package NDCs
18 package NDCs map to RxCUI 542426 in the current snapshot — up to 50 per page. Each linked NDC opens its full package page.
Package NDC Package Brand / generic name Labeler Marketing start
00173-0526-00 100 TABLET, FOR SUSPENSION in 1 BOTTLE (0173-0526-00) LAMICTAL GlaxoSmithKline LLC 1998-09-04
00173-0527-00 100 TABLET, FOR SUSPENSION in 1 BOTTLE (0173-0527-00) LAMICTAL GlaxoSmithKline LLC 1998-09-03
00173-0594-02 1 BLISTER PACK in 1 PACKAGE, COMBINATION (0173-0594-02) / 1... LAMICTAL GlaxoSmithKline LLC 2003-09-29
00173-0633-02 100 TABLET in 1 BOTTLE (0173-0633-02) LAMICTAL GlaxoSmithKline LLC 1996-08-15
00173-0633-10 35 TABLET in 1 DOSE PACK (0173-0633-10) LAMICTAL GlaxoSmithKline LLC 1996-08-15
00173-0642-55 100 TABLET in 1 BOTTLE (0173-0642-55) LAMICTAL GlaxoSmithKline LLC 1995-01-17
00173-0643-60 60 TABLET in 1 BOTTLE (0173-0643-60) LAMICTAL GlaxoSmithKline LLC 1995-01-17
00173-0644-60 60 TABLET in 1 BOTTLE (0173-0644-60) LAMICTAL GlaxoSmithKline LLC 1995-01-18
00173-0699-00 30 TABLET, FOR SUSPENSION in 1 BOTTLE (0173-0699-00) LAMICTAL GlaxoSmithKline LLC 2000-10-12
00173-0699-02 30 TABLET, FOR SUSPENSION in 1 BOTTLE (0173-0699-02) LAMICTAL GlaxoSmithKline LLC 2000-10-12
00173-0772-02 1 DOSE PACK in 1 CARTON (0173-0772-02) / 30 TABLET, ORALLY... LAMICTAL ODT GlaxoSmithKline LLC 2009-06-05
00173-0774-02 1 DOSE PACK in 1 CARTON (0173-0774-02) / 30 TABLET, ORALLY... LAMICTAL ODT GlaxoSmithKline LLC 2009-06-05
00173-0776-02 1 DOSE PACK in 1 CARTON (0173-0776-02) / 30 TABLET, ORALLY... LAMICTAL ODT GlaxoSmithKline LLC 2009-06-05
00173-0777-02 1 DOSE PACK in 1 CARTON (0173-0777-02) / 30 TABLET, ORALLY... LAMICTAL ODT GlaxoSmithKline LLC 2009-06-05
00173-0778-00 1 BLISTER PACK in 1 PACKAGE, COMBINATION (0173-0778-00) / 1... LAMICTAL ODT GlaxoSmithKline LLC 2009-06-05
00173-0779-00 1 BLISTER PACK in 1 PACKAGE, COMBINATION (0173-0779-00) / 1... LAMICTAL ODT GlaxoSmithKline LLC 2009-06-05
00173-0780-00 1 BLISTER PACK in 1 PACKAGE, COMBINATION (0173-0780-00) / 1... LAMICTAL ODT GlaxoSmithKline LLC 2009-06-05
00173-0817-28 1 BLISTER PACK in 1 PACKAGE, COMBINATION (0173-0817-28) / 1... LAMICTAL GlaxoSmithKline LLC 2003-09-29
Observed labelers: GlaxoSmithKline LLC (18) — this is the FDA-listed mapping footprint, not sales, inventory, availability, or market share.

🗃️ Sources & Limits

Atlas generation902fddb9-e9c1-4004-bf4c-dba4d51037c7
openFDA export observedJul 14, 2026
RxNorm release07/06/2026
Methodology2026-07-full-catalog-v1
  • A shared RxCUI does not prove interchangeability. Products mapped to the same concept are not thereby equivalent or substitutable — equivalence is a separate, product-level determination.
  • Listing here does not establish approval or coverage. Appearing in this snapshot is a data observation, not an FDA approval status or a payer coverage decision.
  • Missing data never means zero. A silent dataset (no price, no billing code, no utilization) means no observation — not that the real-world value is zero.
  • Counts describe the mapping footprint. Product, package, and labeler counts are the FDA-listed mapping footprint in this snapshot — not sales, inventory, availability, or market share.
This product uses publicly available data from the U.S. National Library of Medicine (NLM), National Institutes of Health, Department of Health and Human Services; NLM is not responsible for the product and does not endorse or recommend this or any other product.

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Reference information about drug-concept identifiers and public regulatory data — not medical advice. Talk to your pharmacist or prescriber about your own medication.