rxstat › Shortages › Topiramate

Topiramate shortage status

Partial shortage

Source: Health Canada shortage reports · Updated Jul 9, 2026

Some Topiramate products are in shortage in Canada (7 of 38 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 Jul 7, 2026.
Products affected
7 / 38
In shortage since
May 2, 2018
Est. full return
Jul 7, 2026
Reports on file
90
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 shortage
PMS-TOPIRAMATE
50MG · TABLET · PHARMASCIENCE INC
DIN 02312085 · since Jun 12, 2026, est. end Jul 7, 2026 · Disruption of the manufacture of the drug.
Active shortage
GLN-TOPIRAMATE
200MG · TABLET · GLENMARK PHARMACEUTICALS CANADA INC.
DIN 02287781 · since Apr 30, 2026, no end estimate · Disruption of the manufacture of the drug.
Active shortage
ACH-TOPIRAMATE
25MG · TABLET · ACCORD HEALTHCARE INC
DIN 02395738 · since Dec 27, 2023, no end estimate · Disruption of the manufacture of the drug.
Active shortage
ACH-TOPIRAMATE
100MG · TABLET · ACCORD HEALTHCARE INC
DIN 02395746 · since Feb 24, 2023, no end estimate · Disruption of the manufacture of the drug.
Active shortage
MAR-TOPIRAMATE
100MG · TABLET · MARCAN PHARMACEUTICALS INC
DIN 02432102 · since May 2, 2018, no end estimate · Delay in shipping of the drug.
Active shortage
MAR-TOPIRAMATE
100MG · TABLET · MARCAN PHARMACEUTICALS INC
DIN 02432102 · since Jul 10, 2018, no end estimate · Delay in shipping of the drug.
Active shortage
MAR-TOPIRAMATE
25MG · TABLET · MARCAN PHARMACEUTICALS INC
DIN 02432099 · since May 2, 2018, no end estimate · Delay in shipping of the drug.
Active shortage
MAR-TOPIRAMATE
200MG · TABLET · MARCAN PHARMACEUTICALS INC
DIN 02432110 · since May 2, 2018, no end estimate · Delay in shipping of the drug.
To be discontinued
TOPAMAX 25MG
25MG · TABLET · JANSSEN INC
DIN 02230893
To be discontinued
TOPAMAX 200MG
200MG · TABLET · JANSSEN INC
DIN 02230896
To be discontinued
TOPAMAX 100MG
100MG · TABLET · JANSSEN INC
DIN 02230894
Resolved
APO-TOPIRAMATE
25MG · TABLET · APOTEX INC
DIN 02279614 · ended Mar 19, 2026 · Disruption of the manufacture of the drug.

Showing 12 of 60 reports. All reports are on file with Health Canada.

What's happening

Topiramate is currently affected by 7 active shortage reports filed with Health Canada by PHARMASCIENCE INC, GLENMARK PHARMACEUTICALS CANADA INC., ACCORD HEALTHCARE INC, MARCAN PHARMACEUTICALS INC.

The reported causes are: disruption of the manufacture of the drug; delay in shipping 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.

Topiramate is classified under “ANTIEPILEPTICS” (ATC N03AX).

Recent changes

Common questions

When will Topiramate be back in stock in Canada?

The latest manufacturer estimate is Jul 7, 2026. Estimates are self-reported and often slip; this page updates automatically when they change.

Why is Topiramate 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.

Related drugs (antiepileptics)

Partial shortageBrivaracetam1 of 8 reported products affected · est. return Apr 3, 2026Partial shortageCarbamazepine2 of 20 reported products affected · est. return Jun 26, 2026Partial shortageClonazepam5 of 21 reported products affectedPartial shortageLacosamide6 of 34 reported products affected · est. return Aug 10, 2026Partial shortageLevetiracetam13 of 48 reported products affected · est. return Sep 11, 2026Partial shortageOxcarbazepine3 of 8 reported products affected · est. return Dec 30, 2022

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.