United States· US:43598-940_641acdcc-9618-84e0-a09a-cbf956ffbe61

Topiramate

A topiramate product containing topiramate, registered in United States by Dr. Reddy’s Laboratories Inc.. The same ATC class is registered in 18 of our 19 countries.

ATC N03AX11US label

Checked against FDA National Drug Code directory (United States) on September 27, 2026

Informational only — not a medical device.

Compare price across countriesPer daily dose · free account Ask the assistant about topiramateAnswers with sources · free account Check interactionsSeverity free · mechanism on Growth

Where it is registered

Topiramate is registered in 18 of 19 countries.

Countries holding a registration under ATC N03AX11 (topiramate), each read from that country’s own register.

This record: United States, from FDA National Drug Code directory (United States)
11 of them publish a price we can compare per daily dose

Search topiramate products by name

Topiramate · ATC N03AX11

18 / 19 countries

Belgiumprice
Canada
Czechiaprice
Denmark
Finlandprice
Franceprice
Germany
Icelandprice
Ireland
Italyprice
Japan
Netherlands
Norwayprice
Polandprice
Spainprice
Switzerlandprice
United Kingdom
United Statesprice

Blue: a registration under this ATC code. The ringed marker is this record’s country. Markets marked price publish a price we can compare per daily dose.

Price per daily dose

What a daily dose of topiramate costs, country by country.

Normalised to the WHO defined daily dose (0.3 g), the median price runs from $1.28 in France to $30.56 in United States — a ×24 gap.

United States: $30.56 per daily dose (median across products in the class)
Public list prices, converted to USD at the rate date shown
US figures are pharmacy acquisition cost (CMS NADAC), not retail

Open the full comparison — free account Drug prices for market access

Topiramate · price per daily dose (0.3 g)

USD · FX 28 Sept 2026

US United States$30.56 (acquisition cost)
CH Switzerland$4.55
IT Italy$2.28
ES Spain$2.09
FR France$1.28

Median listed price per WHO defined daily dose, in each market that publishes a price. US = pharmacy acquisition cost (CMS NADAC), not a retail price. Open the full comparison

The record

At a glance

FDA National Drug Code directory (United States)

Active substance: TOPIRAMATE
Manufacturer: Dr. Reddy’s Laboratories Inc.
Country: United States (US)
ATC code: N03AX11
ATC class: Topiramate
Defined daily dose: 0.3 g, O
Reimbursed: Not published by this register
Source register: FDA National Drug Code directory (United States)
Last checked: September 27, 2026

Packs & prices · 4

ndc11
43598-940-01
ndc11
43598-940-30
ndc11
4359894001
100 CAPSULE, EXTENDED RELEASE in 1 BOTTLE (43598-940-01)
ndc11
4359894030
30 CAPSULE, EXTENDED RELEASE in 1 BOTTLE (43598-940-30)

Regulatory notes

No shortage, Orange Book or US label notes for this record.

Interactions

279 interactions on record for topiramate.

Graded by severity as the source publishes them — 43 severe. Severity grades are free for everyone; mechanism and management come with Growth.

Severity for every pair — free, no plan needed
The source, licence and sync date on every record
Mechanism and what to do for each pair — Growth plan

Check topiramate against other medicines How interaction checks work

Topiramate · interactions on record

279 records

43 severe
43 moderate
163 info

Most severe, free to view

DicycloverineA03AA07severe
PropanthelineA03AB05severe
MepenzolateA03AB12severe
TrospiumA03AB20severe

30 more interactions with mechanism and management, from a commercially licensed source.

Interaction severity from DDInter 2.0 (Xiong G. et al., Nucleic Acids Res.), licensed CC BY-NC 4.0 — free for non-commercial use only; not covered by the Drug Database commercial licence.

Mechanism and what to do, in the interaction check

Source: DDInter 2.0 · synced 29 Sept 2026. Grades as the source publishes them.

Same medicine, other countries

Topiramate in 16 other countries

What each register calls a product with the same active substance — salts and hydrates count as the same.

All topiramate products

Authorised across Europe · EMA

The same active substance is authorised in 30 EEA countries. Names it is sold under:

Austria · Topamax, Topilex
Belgium · Topamax, Topiramate Eg
Bulgaria · Topilex, Талопам
Cyprus · Topamax, Topiramate Aurobindo
Czechia · Tolepso, Topamax
Germany · Migräne, Topamax
Denmark · Maritop, Topimax
Estonia · Topamax,, Topiramate Elvim
Spain · Acomicil, Topamax
Finland · Topimax, Topiramat Orion
France · Epitomax, Topiramate Arrow
United Kingdom (Northern Ireland) · Topamax, Topiramate
Greece · Jadix, Topamac
Croatia · Topamax
Hungary · Etopro, Topamax
Ireland · Topamax, Topamax Sprinkle
Iceland · Topimax, Topiramat Actavis
Italy · Topamax, Topiramato Aurobindo
Lithuania · Topamax, Topiramat Orion
Luxembourg · Topamax
Latvia · Topamax, Topiramat Orion
Malta · Topamax, Topiramate Accord Healthcare
Netherlands · Topamax, Topamax Sprinkle
Norway · Topimax, Topiramat Sandoz
Poland · Etopro, Oritop
Portugal · Topamax, Topiramato Alter
Romania · Topilex, Topiramat Teva
Sweden · Topimax, Topiramat 1a Farma
Slovenia · Topamax
Slovakia · Talopam, Topimark

Source: European Medicines Agency, Article 57 product data.

Sourced from a public register and reproduced with attribution. Drug Database is not affiliated with, endorsed by, or a partner of FDA National Drug Code directory (United States). This is an informational data service and not a medical device — verify against the official source of record before any clinical decision.

For developers

The same record over the API, and the raw payload

GET /v1/drugs/b8a81e3c-9bc4-451d-bc11-df02cec84c51
GET /v1/drugs/b8a81e3c-9bc4-451d-bc11-df02cec84c51?format=fhir

Every response carries last_synced_at, so freshness is a field rather than a promise. Below is exactly what the ingestion wrote, before any presentation — the same JSON the API returns under payload.

{
  "route": "ORAL",
  "source": "ndc",
  "strength": "50",
  "substance": "TOPIRAMATE",
  "productndc": "43598-940",
  "dosage_form": "CAPSULE, EXTENDED RELEASE",
  "dea_schedule": null,
  "strength_unit": "mg/1",
  "application_number": "ANDA217231",
  "marketing_category": "ANDA"
}

API reference MCP server Plans

See everything about topiramate.

This page is the registration. A free account adds the label text as the regulator wrote it, what it costs per daily dose across the markets that publish a price, a feed of what changes in the registers, and an assistant that answers with its sources. Interaction severity is free; mechanism and management are on the Growth plan. No card, nothing to install.

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