Source: Health Canada shortage reports · Updated Jul 9, 2026
Some Hydralazine products are in shortage in Canada (1 of 10 reported products), while others remain available. Your pharmacy may be able to substitute an unaffected manufacturer.
A vasodilator used to treat high blood pressure.
Products affected
1 / 10
In shortage since
Aug 21, 2019
Reports on file
28
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
APRESOLINE
20MG · SOLUTION · STERIMAX INC
DIN 00723754 · since Aug 21, 2019, no end estimate · Resupply date is unknown.
Resolved
HYDRALAZINE HYDROCHLORIDE INJECTION, USP
20MG · SOLUTION · AURO PHARMA INC
DIN 02516160 · ended Feb 18, 2025 · Demand increase for the drug.
Resolved
APO-HYDRALAZINE
50MG · TABLET
TABLET · APOTEX INC
DIN 00441635 · ended Feb 6, 2025 · Disruption of the manufacture of the drug.
Resolved
HYDRALAZINE HYDROCHLORIDE INJECTION, USP
20MG · SOLUTION · EUGIA PHARMA INC.
DIN 02537699 · ended Jan 2, 2025 · Demand increase for the drug.
Resolved
APO-HYDRALAZINE
25MG · TABLET
TABLET · APOTEX INC
DIN 00441627 · ended Sep 19, 2024 · Disruption of the manufacture of the drug.
Resolved
APO-HYDRALAZINE
25MG · TABLET
TABLET · APOTEX INC
DIN 00441627 · ended Jun 13, 2024 · Disruption of the manufacture of the drug.
Resolved
APO-HYDRALAZINE
25MG · TABLET
TABLET · APOTEX INC
DIN 00441627 · ended Apr 4, 2024 · Disruption of the manufacture of the drug.
Resolved
APO-HYDRALAZINE
25MG · TABLET
TABLET · APOTEX INC
DIN 00441627 · ended Nov 3, 2023 · Disruption of the manufacture of the drug.
Resolved
APO-HYDRALAZINE
50MG · TABLET
TABLET · APOTEX INC
DIN 00441635 · ended Jan 5, 2023 · Disruption of the manufacture of the drug.
Resolved
APO-HYDRALAZINE
25MG · TABLET
TABLET · APOTEX INC
DIN 00441627 · ended Dec 22, 2022 · Disruption of the manufacture of the drug.
Resolved
APO-HYDRALAZINE
10MG · TABLET
TABLET · APOTEX INC
DIN 00441619 · ended Dec 22, 2022 · Disruption of the manufacture of the drug.
Resolved
APO-HYDRALAZINE
25MG · TABLET
TABLET · APOTEX INC
DIN 00441627 · ended Jul 14, 2021 · Disruption of the manufacture of the drug.
Showing 12 of 28 reports. All reports are on file with Health Canada.
What's happening
Hydralazine is currently affected by an active shortage report filed with Health Canada by STERIMAX INC.
The reported cause is: resupply date is unknown. 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.
Hydralazine is classified under “ARTERIOLARSMOOTH MUSCLE, AGENTS ACTING ON” (ATC C02DB).
Recent changes
No changes recorded yet.
Common questions
What is Hydralazine used for?
A vasodilator used to treat high blood pressure.
When will Hydralazine be back in stock in Canada?
Manufacturers have not provided a reliable end date. This page updates automatically as soon as an estimate is filed.
Why is Hydralazine 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.