Source: Health Canada shortage reports · Updated Sep 25, 2026
Some Cimetidine products are in shortage in Canada (4 of 9 reported products), while others remain available. Your pharmacy may be able to substitute an unaffected manufacturer. The latest estimate for affected products to return is Oct 9, 2026.
An H2 blocker used to reduce stomach acid and treat heartburn and ulcers.
Products affected
4 / 9
In shortage since
Jan 23, 2015
Est. full return
Oct 9, 2026
Reports on file
19
Talk to a pharmacist
Pharmacists can substitute an unaffected manufacturer's version, adjust strengths, and in most provinces adapt or renew a prescription on the spot.
Independent services, not affiliated with rxstat; referral fees may apply. Free options exist depending on your province. In an emergency call 911; free health advice at 811.
Shortage history
Shortage history (red bands = periods in shortage).
Reports by product
The DIN is printed on your prescription label.
Active shortage
CIMETIDINE
300MG · TABLET · AA PHARMA INC
DIN 00487872 · since Sep 8, 2026, est. end Oct 9, 2026 · Disruption of the manufacture of the drug.
Active shortage
APO CIMETIDINE TAB 600MG
600MG · TABLET · APOTEX INC
DIN 00600067 · since Aug 23, 2016, no end estimate · Disruption of the manufacture of the drug.
Active shortage
APO CIMETIDINE TAB 400MG
400MG · TABLET · APOTEX INC
DIN 00600059 · since Jan 23, 2015, no end estimate · Disruption of the manufacture of the drug.
Active shortage
APO-CIMETIDINE ORAL SOLUTION
300MG · LIQUID · APOTEX INC
DIN 02243085 · since Mar 10, 2017, no end estimate · Disruption of the manufacture of the drug.
Resolved
CIMETIDINE
300MG · TABLET · AA PHARMA INC
DIN 00487872 · ended Oct 28, 2025 · Disruption of the manufacture of the drug.
Resolved
CIMETIDINE
300MG · TABLET · AA PHARMA INC
DIN 00487872 · ended Dec 3, 2024 · Disruption of the manufacture of the drug.
Resolved
CIMETIDINE
300MG · TABLET · AA PHARMA INC
DIN 00487872 · ended Apr 19, 2024 · Disruption of the manufacture of the drug.
To be discontinued
APO CIMETIDINE TAB 300MG
300MG · TABLET · APOTEX INC
DIN 00487872
Discontinued
APO-CIMETIDINE TAB 800MG
800MG · TABLET · APOTEX INC
DIN 00749494
Discontinued
APO CIMETIDINE TAB 600MG
600MG · TABLET · APOTEX INC
DIN 00600067
Resolved
APO CIMETIDINE TAB 300MG
300MG · TABLET · APOTEX INC
DIN 00487872 · ended Jun 25, 2018 · Disruption of the manufacture of the drug.
Discontinued
MYLAN-CIMETIDINE
800MG · TABLET · MYLAN PHARMACEUTICALS ULC
DIN 02227479
Showing 12 of 19 reports. All reports are on file with Health Canada.
What's happening
Cimetidine is currently affected by 4 active shortage reports filed with Health Canada by AA PHARMA INC, APOTEX INC.
The reported cause is: disruption of the manufacture of the drug. 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.
Cimetidine is classified under “DRUGS FOR PEPTIC ULCER AND GASTROESOPHAGEAL REFLUX DISEASE (GERD)” (ATC A02BA).
Recent changes
Sep 25, 2026
Estimated end date pushed back : Oct 2, 2026 → Oct 9, 2026
Sep 11, 2026
New report filed
Common questions
What is Cimetidine used for?
An H2 blocker used to reduce stomach acid and treat heartburn and ulcers.
When will Cimetidine be back in stock in Canada?
The latest manufacturer estimate is Oct 9, 2026. Estimates are self-reported and often slip; this page updates automatically when they change.
Why is Cimetidine 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.
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Drugs in the same therapeutic class, best-supplied first. These are not automatic substitutes: only your pharmacist or prescriber can judge whether a switch makes sense for you.
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.