Home › NDC Lookup › RxCUI directory › RxCUI 845479

Topiramate 25 MG Oral Capsule [Topamax] — RxCUI 845479

RxNorm drug concept · Semantic branded drug
RxCUI 845479 Semantic branded drug · SBD ● Current RxNorm concept 6 FDA products 6 package NDCs Snapshot Jul 14, 2026

This page is curated, coded, and maintained by

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

RxCUI845479
Official nameTopiramate 25 MG Oral Capsule [Topamax]
Concept typeSemantic branded drug (SBD)
RxNorm statusCurrent RxNorm concept
Also known asTopamax 25 MG Oral Capsule; Topamax 25 MG Oral Sprinkle Capsule
FDA products mapped6
Package NDCs mapped6
Reported Medicaid activity (SDUD)8,635 prescriptions · 31 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 Topiramate: what it is, how it’s used, side effects, and interactions.

📗 Our plain-language guide HelloPharmacist
📖 Read our full Topiramate guide →

🕸️ Concept Web — How Topiramate 25 MG Oral Capsule [Topamax] 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 Topiramate 25 MG Oral Capsule [Topamax] RxCUI 845479

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.

    • Topiramate 38404
  2. Brand names 1

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

    • Topamax 220343
  3. Dose forms 9

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

    • Topiramate Oral Capsule 374165
    • Topiramate Oral Product 1162749
    • Topiramate Pill 1162750
    • Topiramate Oral Capsule [Topamax] 845477
    • Topamax Oral Product 1177986
    • Topamax Pill 1177987
    • Oral Capsule 316965
    • Oral Product 1151131
    • +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

  • Topiramate 25 MG Oral Capsule SCD · 205315
  • Topiramate 25 MG SCDC · 316841
  • Topiramate Oral Capsule SCDF · 374165
  • Topiramate Oral Product SCDG · 1162749
  • Topiramate Pill SCDG · 1162750

Brand-Name Concepts

  • Topiramate 25 MG [Topamax] SBDC · 565087
  • Topiramate Oral Capsule [Topamax] SBDF · 845477
  • Topamax Oral Product SBDG · 1177986
  • Topamax Pill SBDG · 1177987
  • Topamax BN · 220343

📦 FDA Products & Package NDCs

6 products · 6 package NDCs
6 package NDCs map to RxCUI 845479 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
50458-0639-65 60 TABLET, COATED in 1 BOTTLE (50458-639-65) Topamax Janssen Pharmaceuticals, Inc. 1997-01-01
50458-0640-65 60 TABLET, COATED in 1 BOTTLE (50458-640-65) Topamax Janssen Pharmaceuticals, Inc. 1997-01-01
50458-0641-65 60 TABLET, COATED in 1 BOTTLE (50458-641-65) Topamax Janssen Pharmaceuticals, Inc. 1997-01-01
50458-0642-65 60 TABLET, COATED in 1 BOTTLE (50458-642-65) Topamax Janssen Pharmaceuticals, Inc. 1997-01-01
50458-0645-65 60 CAPSULE, COATED PELLETS in 1 BOTTLE (50458-645-65) Topamax Janssen Pharmaceuticals, Inc. 1998-11-01
50458-0647-65 60 CAPSULE, COATED PELLETS in 1 BOTTLE (50458-647-65) Topamax Janssen Pharmaceuticals, Inc. 1998-11-01
Observed labelers: Janssen Pharmaceuticals, Inc. (6) — 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.

Machine-readable JSON

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