Source: Health Canada shortage reports · Updated Aug 7, 2026
Some Diltiazem products are in shortage in Canada (17 of 93 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 Jan 29, 2027.
A calcium channel blocker used to lower blood pressure and treat chest pain (angina).
Products affected
17 / 93
In shortage since
Mar 10, 2017
Est. full return
Jan 29, 2027
Reports on file
235
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
PRO-DILTIAZEM CD
300MG · CAPSULE (CONTROLLED-DELIVERY) · PRO DOC LIMITEE
DIN 02540959 · since Aug 3, 2026, est. end Dec 15, 2026 · Disruption of the manufacture of the drug.
Active shortage
DILTIAZEM HYDROCHLORIDE INJECTION
5MG · SOLUTION · OMEGA LABORATORIES LIMITED
DIN 02514095 · since May 1, 2026, est. end Nov 30, 2026 · Disruption of the manufacture of the drug.
DIN 02229526 · since Mar 17, 2026, est. end Jan 29, 2027 · Disruption of the manufacture of the drug.
Showing 12 of 60 reports. All reports are on file with Health Canada.
What's happening
Diltiazem is currently affected by 17 active shortage reports filed with Health Canada by PRO DOC LIMITEE, OMEGA LABORATORIES LIMITED, TEVA CANADA LIMITED, JAMP PHARMA CORPORATION and 1 others.
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.
Diltiazem is classified under “SELECTIVE CALC.CHANNEL BLOCK. W/DIRECT CARDIAC EFF” (ATC C08DB).
Recent changes
Aug 7, 2026
Status changed
Aug 7, 2026
Estimated end date pushed back : Nov 15, 2026 → Dec 15, 2026
Aug 5, 2026
Estimated end date pushed back : Aug 31, 2026 → Nov 30, 2026
Aug 5, 2026
New report filed
Jul 31, 2026
Estimated end date pushed back : Jul 10, 2026 → Aug 30, 2026
Jul 31, 2026
Estimated end date pushed back : Jul 20, 2026 → Aug 30, 2026
Jul 31, 2026
Estimated end date pushed back : Jul 31, 2026 → Nov 10, 2026
Jul 29, 2026
Estimated end date pushed back : Sep 18, 2026 → Oct 16, 2026
Jul 16, 2026
Shortage resolved
Common questions
What is Diltiazem used for?
A calcium channel blocker used to lower blood pressure and treat chest pain (angina).
When will Diltiazem be back in stock in Canada?
The latest manufacturer estimate is Jan 29, 2027. Estimates are self-reported and often slip; this page updates automatically when they change.
Why is Diltiazem 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.