rxstat › Shortages › Acetazolamide
Acetazolamide shortage status
Widespread shortage
Source: Health Canada shortage reports · Updated Jul 9, 2026
Acetazolamide is in a widespread shortage in Canada. 2 of 3 reported products are affected. The latest manufacturer estimate for full recovery is Jan 1, 2027.
In shortage since
Apr 23, 2026
Est. full return
Jan 1, 2027
Talk to your pharmacist. Pharmacists can often substitute another manufacturer's version, a different strength, or (in most provinces) adapt or renew a prescription on the spot. Your free provincial health line is 811.
Reports by product
Active shortageACETAZOLAMIDE FOR INJECTION USP
500MG · POWDER FOR SOLUTION · MARCAN PHARMACEUTICALS INC
DIN 02537893 · since Apr 23, 2026, est. end Jul 31, 2026 · Disruption of the manufacture of the drug.
Active shortageACETAZOLAMIDE FOR INJECTION, USP
500MG · POWDER FOR SOLUTION · STERIMAX INC
DIN 02358328 · since ?, est. end Jan 1, 2027 · Other (Please describe in comments)
ResolvedACETAZOLAMIDE FOR INJECTION USP
500MG · POWDER FOR SOLUTION · MARCAN PHARMACEUTICALS INC
DIN 02537893 · ended May 14, 2025 · Delay in shipping of the drug.
ResolvedACETAZOLAMIDE
250MG · TABLET · AA PHARMA INC
DIN 00545015 · ended Apr 15, 2025 · Disruption of the manufacture of the drug.
ResolvedACETAZOLAMIDE
250MG · TABLET · AA PHARMA INC
DIN 00545015 · ended Nov 29, 2024 · Disruption of the manufacture of the drug.
ResolvedACETAZOLAMIDE
250MG · TABLET · AA PHARMA INC
DIN 00545015 · ended May 29, 2024 · Disruption of the manufacture of the drug.
ResolvedACETAZOLAMIDE
250MG · TABLET · AA PHARMA INC
DIN 00545015 · ended Apr 4, 2023 · Disruption of the manufacture of the drug.
ResolvedACETAZOLAMIDE FOR INJECTION, USP
500MG · POWDER FOR SOLUTION · STERIMAX INC
DIN 02358328 · ended Mar 2, 2023 · Demand increase for the drug.
ResolvedACETAZOLAMIDE
250MG · TABLET · AA PHARMA INC
DIN 00545015 · ended Jan 18, 2018 · Disruption of the manufacture of the drug.
ResolvedACETAZOLAMIDE
250MG · TABLET · AA PHARMA INC
DIN 00545015 · ended Jul 12, 2017 · Disruption of the manufacture of the drug.
What's happening
Acetazolamide is currently affected by 2 active shortage reports filed with Health Canada by MARCAN PHARMACEUTICALS INC, STERIMAX INC.
The reported causes are: disruption of the manufacture of the drug; other (please describe in comments). Manufacturers must report shortages, but end-date estimates are their own projections and often move.
If your usual product is affected, a pharmacist is the fastest route to a solution: they can dispense an unaffected manufacturer's equivalent when one exists, and in most provinces can adapt doses or substitute a therapeutic alternative without a new appointment.
Acetazolamide is classified under “ANTIGLAUCOMA PREPARATIONS AND MIOTICS” (ATC S01EC).
Recent changes
Common questions
When will Acetazolamide be back in stock in Canada?
The latest manufacturer estimate is Jan 1, 2027. Estimates are self-reported and often slip; this page updates automatically when they change.
Why is Acetazolamide in shortage?
See the reports above; manufacturers must state a reason (most commonly manufacturing disruption or a surge in demand) when filing with Health Canada.
What can my pharmacist do about it?
Often quite a lot: substitute an equivalent product from an unaffected manufacturer, adjust quantities, or in most provinces adapt or renew prescriptions on the spot. Call your pharmacy before visiting, and call 811 for free health advice.
All antiglaucoma preparations and miotics shortage statuses →
Guides: what to do when your medication is in shortage · how to read shortage reports
Data reflects reports manufacturers are legally required to file with Health Canada, republished with per-drug aggregation by rxstat. Estimated end dates are supplied by manufacturers and frequently change. This page describes drug supply only and is not medical advice; never stop or switch a medication without speaking to your pharmacist or prescriber.