Source: Health Canada shortage reports · Updated Oct 16, 2026
Some Diltiazem products are in shortage in Canada (18 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 May 31, 2027.
A calcium channel blocker used to lower blood pressure and treat chest pain (angina).
Products affected
18 / 93
In shortage since
Mar 10, 2017
Est. full return
May 31, 2027
Reports on file
237
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).
DIN 02528037 · since Mar 12, 2026, est. end Oct 30, 2026 · Disruption of the manufacture of the drug.
Active shortage
PRO-DILTIAZEM CD
120MG · CAPSULE (CONTROLLED-DELIVERY) · PRO DOC LIMITEE
DIN 02540924 · since Sep 8, 2026, est. end Jan 15, 2027 · Disruption of the manufacture of the drug.
Active shortage
PRO-DILTIAZEM CD
240MG · CAPSULE (CONTROLLED-DELIVERY) · PRO DOC LIMITEE
DIN 02540940 · since Aug 27, 2026, est. end Jan 15, 2027 · Disruption of the manufacture of the drug.
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.
Showing 12 of 60 reports. All reports are on file with Health Canada.
What's happening
Diltiazem is currently affected by 18 active shortage reports filed with Health Canada by SIVEM PHARMACEUTICALS ULC, OMEGA LABORATORIES LIMITED, APOTEX INC, JAMP PHARMA CORPORATION and 2 others.
The reported causes are: requirements related to complying with good manufacturing practices; 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
Oct 16, 2026
Status changed
Oct 16, 2026
Estimated end date pushed back : Jan 1, 2027 → May 1, 2027
Oct 16, 2026
Status changed
Oct 16, 2026
Estimated end date pushed back : Jan 1, 2027 → May 1, 2027
Oct 5, 2026
New report filed
Sep 29, 2026
Estimated end date pushed back : Nov 30, 2026 → Mar 31, 2027
Sep 25, 2026
Estimated end date pushed back : Jan 29, 2027 → May 31, 2027
Sep 25, 2026
Estimated end date pushed back : Jan 29, 2027 → May 31, 2027
Sep 25, 2026
Estimated end date pushed back : Jan 29, 2027 → May 31, 2027
Sep 25, 2026
Estimated end date pushed back : Jan 29, 2027 → May 31, 2027
Sep 21, 2026
Estimated end date pushed back : Aug 14, 2026 → Oct 16, 2026
Sep 21, 2026
Estimated end date pushed back : Oct 16, 2026 → Oct 30, 2026
Sep 9, 2026
Status changed
Sep 8, 2026
Shortage resolved
Sep 8, 2026
Shortage resolved
Sep 8, 2026
Shortage resolved
Sep 8, 2026
Shortage resolved
Aug 28, 2026
Status changed
Aug 28, 2026
Status changed
Aug 27, 2026
New report filed
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 May 31, 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.