United States· US:63187-897_07dda324-2d2e-489f-ab71-004579ac5ece

Zonisamide

A zonisamide product containing zonisamide, registered in United States by Proficient Rx LP. The same ATC class is registered in 18 of our 19 countries.

ATC N03AX15US 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 zonisamideAnswers with sources · free account Check interactionsSeverity free · mechanism on Growth

Where it is registered

Zonisamide is registered in 18 of 19 countries.

Countries holding a registration under ATC N03AX15 (zonisamide), 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 zonisamide products by name

Zonisamide · ATC N03AX15

18 / 19 countries

Belgiumprice
Czechiaprice
Denmark
Finlandprice
Franceprice
Germany
Icelandprice
Ireland
Italyprice
Japan
Netherlands
Norwayprice
Polandprice
Spainprice
Sweden
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 zonisamide costs, country by country.

Normalised to the WHO defined daily dose (0.4 g), the median price runs from $0.78 in United States to $10.28 in Switzerland — a ×13 gap.

United States: $0.78 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

Zonisamide · price per daily dose (0.4 g)

USD · FX 28 Sept 2026

CH Switzerland$10.28
IT Italy$2.90
FR France$1.20
US United States$0.78 (acquisition cost)

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: ZONISAMIDE
Manufacturer: Proficient Rx LP
Country: United States (US)
ATC code: N03AX15
ATC class: Zonisamide
Defined daily dose: 0.4 g, O
Reimbursed: Not published by this register
Source register: FDA National Drug Code directory (United States)
Last checked: September 27, 2026

Packs & prices · 6

ndc11
63187-897-30
ndc11
63187-897-60
ndc11
63187-897-90
ndc11
6318789730
30 CAPSULE in 1 BOTTLE (63187-897-30)
ndc11
6318789760
60 CAPSULE in 1 BOTTLE (63187-897-60)
ndc11
6318789790
90 CAPSULE in 1 BOTTLE (63187-897-90)

Regulatory notes

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

Interactions

239 interactions on record for zonisamide.

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 zonisamide against other medicines How interaction checks work

Zonisamide · interactions on record

239 records

43 severe
105 moderate
66 info

Most severe, free to view

DicycloverineA03AA07severe
PropanthelineA03AB05severe
MepenzolateA03AB12severe
TrospiumA03AB20severe

25 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

Zonisamide in 15 other countries

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

All zonisamide products

Authorised across Europe · EMA

The same active substance is authorised in 25 EEA countries. Names it is sold under:

Austria · Zonisamid Aristo
Bulgaria · Зокап
Czechia · Ersittin, Zonisamid Sandoz
Germany · Zonisamid 1 A Pharma, Zonisamid Accord
Denmark · Zonisamid Desitin, Zonisamid Glenmark
Estonia · Zonisamide Sandoz
Spain · Nyzol, Zonesme
Finland · Zonisamide Desitin
France · Zonisamide Arrow, Zonisamide Neuraxpharm
United Kingdom (Northern Ireland) · Desizon, Zonisamide Accord
Croatia · Zocap
Ireland · Zonisamide Desitin, Zonisamide Rowex
Iceland · Zonegran, Zonisamide Viatris
Italy · Zonisamide Doc Generici, Zonisamide Sandoz
Liechtenstein · Zonegran, Zonisamide Viatris
Lithuania · Zonisamide Sandoz
Malta · Zonisamide Doc Generici
Netherlands · Zonisamide Indoco, Zonisamide Sandoz
Norway · Zonegran, Zonisamid Desitin
Poland · Zonisamidum Neuraxpharm
Portugal · Zonisamida Aristo, Zonisamida Generis
Romania · Zocap, Zonisamidă Desitin
Sweden · Zonisamide 1a Farma
Slovenia · Zocap, Zonisamid Sandoz
Slovakia · Zonisamide Neuraxpharm

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/da2691ee-a5a3-40a8-9bc6-9e6d26efd8b3
GET /v1/drugs/da2691ee-a5a3-40a8-9bc6-9e6d26efd8b3?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": "100",
  "substance": "ZONISAMIDE",
  "productndc": "63187-897",
  "dosage_form": "CAPSULE",
  "dea_schedule": null,
  "strength_unit": "mg/1",
  "application_number": "ANDA077634",
  "marketing_category": "ANDA"
}

API reference MCP server Plans

See everything about zonisamide.

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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