United States· US:71335-3083_8a54747c-67c0-42c9-bc36-bea05101c811

Isoniazid

A isoniazid product containing isoniazid, registered in United States by Bryant Ranch Prepack. The same ATC class is registered in 15 of our 19 countries.

ATC J04AC01US 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 isoniazidAnswers with sources · free account Check interactionsSeverity free · mechanism on Growth

Where it is registered

Isoniazid is registered in 15 of 19 countries.

Countries holding a registration under ATC J04AC01 (isoniazid), each read from that country’s own register.

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

Search isoniazid products by name

Isoniazid · ATC J04AC01

15 / 19 countries

Belgiumprice
Canada
Czechiaprice
Denmark
Finlandprice
Franceprice
Germany
Icelandprice
Japan
Netherlands
Norwayprice
Polandprice
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 isoniazid costs, country by country.

Normalised to the WHO defined daily dose (0.3 g), the median price runs from $1.15 in France to $4.87 in Switzerland — a ×4.3 gap.

2 markets with a comparable price for this class
Public list prices, converted to USD at the rate date shown

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

Isoniazid · price per daily dose (0.3 g)

USD · FX 28 Sept 2026

CH Switzerland$4.87
FR France$1.15

Median listed price per WHO defined daily dose, in each market that publishes a price. Open the full comparison

The record

At a glance

FDA National Drug Code directory (United States)

Active substance: ISONIAZID
Manufacturer: Bryant Ranch Prepack
Country: United States (US)
ATC code: J04AC01
ATC class: Isoniazid
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 · 2

ndc11
71335-3083-1
ndc11
7133530831
30 TABLET in 1 BOTTLE (71335-3083-1)

Regulatory notes

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

Interactions

335 interactions on record for isoniazid.

Graded by severity as the source publishes them — 5 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 isoniazid against other medicines How interaction checks work

Isoniazid · interactions on record

335 records

5 severe
233 moderate
26 minor
67 info

Most severe, free to view

AlosetronA03AE01moderate
Sodium picosulfateA06AB08moderate
BudesonideA07EA06moderate
LiraglutidA08AX02moderate

4 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

Isoniazid in 16 other countries

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

All isoniazid products

Authorised across Europe · EMA

The same active substance is authorised in 21 EEA countries. Names it is sold under:

Austria · Inh Agepha
Belgium · Nicotibine
Bulgaria · Изонид, Изонид Дансон-Бг
Czechia · Nidrazid
Germany · Isozid, Isozid N
Denmark · Isoniazid Oba
Spain · Cemidon
Finland · Tubilysin
France · Rimifon
United Kingdom (Northern Ireland) · Isoniazid Dawa, Isoniazid Macleods Pharma Uk
Greece · Dianicotyl
Hungary · Isonicid
Iceland · Tibinide
Italy · Nicozid
Luxembourg · Nicotibine
Netherlands · Isoniazide Costero
Poland · Nidrazid
Portugal · Isoniazida Labesfal
Romania · Izoniazidă Arena, Izoniazida Atb
Sweden · Tibinide
Slovakia · Nidrazid

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/fa19012f-4ede-40c8-a799-3798c9dbec0f
GET /v1/drugs/fa19012f-4ede-40c8-a799-3798c9dbec0f?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": "ISONIAZID",
  "productndc": "71335-3083",
  "dosage_form": "TABLET",
  "dea_schedule": null,
  "strength_unit": "mg/1",
  "application_number": "ANDA080936",
  "marketing_category": "ANDA"
}

API reference MCP server Plans

See everything about isoniazid.

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.

Try it free Open in the console