As of 01 Nov 2026 13:58 UTC. Status is always as stated in the latest recorded notice; the sources do not publish resolution, so nothing on this page says a medicine is back — see methodology.
Presentations, as stated in the latest recorded notice
Each line is re-expressed from MSN/2023/033 (27 Mar 2023): the product named, the status the source stated, and the expected-back phrase kept as written. Not the source's sentence, and not an observation of stock.
| Presentation | Status, as stated | Expected back, as stated | Stated in |
|---|---|---|---|
| Acetazolamide (Diamox® SR) 250mg modified-release capsulesaffected product · inferred from phrasing | Out of stock, as stated | end of July 2023precision: a month · window end 31 Jul 2023, derived from “end of July 2023” | notice of 27 Mar 2023 |
| Acetazolamide immediate release 250mg tabletsnamed by the source as remaining available · inferred from phrasing | Stated as available | — not stated for this line | notice of 27 Mar 2023 |
Protocol in force
No Serious Shortage Protocol matched to this name is in force on the NHSBSA register. Matching is by name until identifier coding lands.
Named in the source as remaining available
- Acetazolamide immediate release 250mg tablets — named by the source as remaining available (inferred from phrasing)
Only names the source itself listed, as it listed them (source post ↗). No substitution, dosing or counselling advice is given here or implied.
Identifiers — Acetazolamide
BNF chemical and SNOMED identifiers from NHSBSA Prescription Cost Analysis (Open Government Licence), matched by name (presentation name), confidence 0.90 — grouping under review where marked Release Jul 2026.
BNF SNOMED mapping, NHSBSA Copyright 2026; Prescription Cost Analysis (PCA) Monthly Administrative Data, NHSBSA Copyright 2026. This information is licenced under the terms of the Open Government Licence.
History
Notified short 2 times on record since 2022 — a recurring shortage spanning 1.1 years. We record when a shortage is declared, not when stock returns — the source doesn't publish that. An update sharing a reference counts as one episode.
| Issued | Notice | Kind | Tier | Reference |
|---|---|---|---|---|
| 27 Mar 2023 | Medicine Supply Notification: Acetazolamide (Diamox® SR) 250mg modified-release capsules | Supply notification | Tier 2 | MSN/2023/033 |
| 10 Feb 2022 | Medicine Supply Notification: Acetazolamide (Diamox® SR) 250mg modified-release capsules | Supply notification | Tier 2 | MSN/2022/006 |
Also recorded under
Bracketed names seen in this medicine's notice titles: diamox sr. Grouping is by the head name in each title; brand and generic names may still sit on separate pages until identifier coding refines it — see the A–Z.
Scotland — separate record
NHS Scotland issues its own Medicine Supply Alert Notices. These match this medicine's name; they are shown beside, never added to, the England record.
- MSAN(2021)3 Acetazolamide SR 250mg capsules · issued 02 Mar 2021 · valid until until May 2021, as stated · matched by name PDF ↗
- MSAN(2020)28 Acetazolamide SR 250mg capsules · issued 20 Apr 2020 · valid until End July 2020, as stated · matched by name PDF ↗