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Isoniazid currently has availability issues reported in 2 European registers: Germany, Greece.
Shortage ATC J04AC01 · also listed as: Isoniazid · data refreshed 7 August 2026
As of 7 August 2026, 2 of the 10 tracked registers list current availability issues for Isoniazid, covering 2 affected product presentations. The longest-running open report was filed in Germany on 2025-12-08 and has now been open for about 8 months. Where agencies state a cause, unexpectedly high demand lead with 1 of the 1 stated-cause reports. The furthest expected-resolution date currently on file is 2026-08-31; the earliest is 2026-08-31. Notably, 1 report has already passed the expected-resolution date without closing — prognoses for this medicine should be read as estimates, not commitments. Registers in Germany indicate that alternatives or equivalents are available — a pharmacist or doctor can advise on switching. In the WHO ATC classification, Isoniazid is coded J04AC01 — a medicine acting on anti-infectives for systemic use — so clinically related products appear under “Related medicines” below.
| Where | Status & products | Since | Expected end | Reason / alternatives | Source |
|---|---|---|---|---|---|
| 🇩🇪 Germany | Shortage Isozid 0,5 N | 2025-12-08 | 2026-08-31 | Erhöhte Nachfrage Alternatives: N/A | register ↗ |
| 🇬🇷 Greece | Limited availability Isoniazid | 2026-07-03 | 2026-07-15 | Ν+Φ Ι.Φ.Ε.Τ. ΑΝΑΜΕΝΕΤΑΙ | register ↗ |
Every individual register entry for Isoniazid in the tracked sources, newest first — including resolved and discontinued reports.
| Reg. | Product | Status | Reported | Expected end | Stated reason |
|---|---|---|---|---|---|
| 🇬🇷 GR | Isoniazid | Limited availability | 2026-07-03 | 2026-07-15 | Ν+Φ Ι.Φ.Ε.Τ. ΑΝΑΜΕΝΕΤΑΙ |
| 🇩🇪 DE | Isozid 0,5 N | Shortage | 2025-12-08 | 2026-08-31 | Erhöhte Nachfrage |
Yes. As of 7 August 2026, availability issues are reported in: Germany, Greece. Availability is national — a shortage in one country does not mean it is short everywhere.
Agency prognoses on file range from 2026-08-31 to 2026-08-31. These are manufacturer-reported estimates and frequently move; check the linked register entry for the latest date.
1 of the active register entries indicate alternatives or equivalents (same active substance or an alternative treatment). Do not switch on your own — a pharmacist or prescriber can confirm the right substitute in your country.
Directly from the official medicines-agency registers that list Isoniazid: BfArM (Germany), EOF limited-availability list (Greece). Every row on this page links to the underlying official record, and the dataset is refreshed from the primary sources every morning. Cross-language matching groups the same active substance across registers, so national spellings all resolve to this page.
Pharmacies, patient sites and newsrooms are welcome to embed the live status of Isoniazid — free, with attribution. Copy this snippet:
<iframe src="https://www.mobidoctor.eu/medicine-shortages/medicine-shortages/isoniazid/embed.html" width="100%" height="150" loading="lazy" style="border:1px solid #e1e0d9;border-radius:12px" title="Isoniazid availability in Europe"></iframe> <p style="font-size:12px">Source: <a href="https://www.mobidoctor.eu/medicine-shortages/medicine-shortages/isoniazid/">Isoniazid shortage status — European Medicine Shortage Tracker</a> by MobiDoctor</p>