Japan· JP-3999032F1021
フェニル酪酸ナトリウム
A sodium phenylbutyrate product containing フェニル酪酸ナトリウム, registered in Japan by オーファンパシフィック, on the national reimbursement list. The same ATC class is registered in 14 of our 19 countries.
Checked against MHLW / PMDA (Japan) on
Informational only — not a medical device.
Where it is registered
Sodium phenylbutyrate is registered in 14 of 19 countries.
Countries holding a registration under ATC A16AX03 (sodium phenylbutyrate), each read from that country’s own register.
- This record: Japan, from MHLW / PMDA (Japan)
- 8 of them publish a price we can compare per daily dose
Sodium phenylbutyrate · ATC A16AX03
14 / 19 countries
- Belgiumprice
- Canada
- Czechiaprice
- Denmark
- Finlandprice
- Icelandprice
- Ireland
- Japan
- Netherlands
- Norwayprice
- Polandprice
- Switzerlandprice
- United Kingdom
- United Statesprice
Price per daily dose
What a daily dose of sodium phenylbutyrate costs, country by country.
Normalised to the WHO defined daily dose (20 g), so markets compare like for like.
- 1 market with a comparable price for this class
- Public list prices, converted to USD at the rate date shown
Sodium phenylbutyrate · price per daily dose (20 g)
USD · FX 28 Sept 2026
- CZ Czechia$0.46
The record
At a glance
MHLW / PMDA (Japan)- Active substance
- フェニル酪酸ナトリウム
- Manufacturer
- オーファンパシフィック
- Country
- Japan (JP)
- ATC code
- A16AX03
- ATC class
- Sodium phenylbutyrate
- Defined daily dose
- 20 g, O
- Reimbursed
- Yes
- Source register
- MHLW / PMDA (Japan)
- Last checked
- September 25, 2026
Packs & prices · 0
No packs listed by the register for this record.
Regulatory notes
No shortage, Orange Book or US label notes for this record.
Same medicine, other countries
Sodium phenylbutyrate in 8 other countries
What each register calls a product with the same active substance — salts and hydrates count as the same.
- PolandAmmonapsImmedica Pharma AB
- SpainAMMONAPS 500 MG COMPRIMIDOSImmedica Pharma Ab
- IcelandAmmonapsImmedica Pharma AB
- NetherlandsAmmonaps 500 mg tablettenImmedica Pharma AB
- FrancePHEBURANE 350 mg/mL, solution buvableEUROCEPT INTERNATIONAL (PAYS-BAS)
- SwitzerlandPheburane 483 mg/g, Granulat zur Herstellung einer Lösung zum EinnehmenMedius AG
- ItalyPHEBURANE*orale grat sosp 174 g 483 mg/gEUROCEPT INTERNATIONAL B.V.
- CzechiaPHEBURANEEurocept International BV, Ankeveen
Sourced from a public register and reproduced with attribution. Drug Database is not affiliated with, endorsed by, or a partner of MHLW / PMDA (Japan). 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/fbc374a4-616e-4187-b07f-a693158158af GET /v1/drugs/fbc374a4-616e-4187-b07f-a693158158af?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.
{
"spec": "５００ｍｇ１錠",
"marks": null,
"source": "mhlw",
"remarks": null,
"yj_code": "3999032F1021",
"category": "内用薬",
"price_yen": 470.6,
"generic_name": "フェニル酪酸ナトリウム",
"product_name_jp": null,
"therapeutic_class": "3999",
"transitional_expiry": null
}See everything about sodium phenylbutyrate.
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.