Sumatriptan (Imitrex, Imitrex Df -) shortage status

Partial shortage

Source: Health Canada shortage reports · Updated Sep 2, 2026

Some Sumatriptan products are in shortage in Canada (1 of 23 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 Feb 9, 2027.

A triptan used to relieve migraine and cluster headaches.

Products affected

1 / 23

In shortage since

Jul 20, 2026

Est. full return

Feb 9, 2027

Reports on file

123

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.

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Shortage history

Shortage history (red bands = periods in shortage).

Reports by product

The DIN is printed on your prescription label.

Active shortage

MYLAN-SUMATRIPTAN

100MG · TABLET · MYLAN PHARMACEUTICALS ULC

DIN 02268922 · since Jul 20, 2026, est. end Feb 9, 2027 · Disruption of the manufacture of the drug.

Anticipated

MYLAN-SUMATRIPTAN

50MG · TABLET · MYLAN PHARMACEUTICALS ULC

DIN 02268914 · Disruption of the manufacture of the drug.

Resolved

TEVA-SUMATRIPTAN DF

100MG · TABLET · TEVA CANADA LIMITED

DIN 02286831 · ended Apr 1, 2026 · Disruption of the manufacture of the drug.

Resolved

TEVA-SUMATRIPTAN DF

50MG · TABLET · TEVA CANADA LIMITED

DIN 02286823 · ended Mar 10, 2026 · Disruption of the manufacture of the drug.

Resolved

TEVA-SUMATRIPTAN

100MG · TABLET · TEVA CANADA LIMITED

DIN 02239367 · ended Mar 10, 2026 · Disruption of the manufacture of the drug.

Resolved

SUMATRIPTAN

50MG · TABLET · SANIS HEALTH INC

DIN 02286521 · ended Feb 4, 2026 · Disruption of the manufacture of the drug.

Resolved

MYLAN-SUMATRIPTAN

50MG · TABLET · MYLAN PHARMACEUTICALS ULC

DIN 02268914 · ended Jan 22, 2026 · Disruption of the manufacture of the drug.

Resolved

IMITREX

20MG · SPRAY · GLAXOSMITHKLINE INC

DIN 02230420 · ended Jan 14, 2026 · Disruption of the manufacture of the drug.

Resolved

IMITREX

5MG · SPRAY · GLAXOSMITHKLINE INC

DIN 02230418 · ended Jan 6, 2026 · Disruption of the manufacture of the drug.

Resolved

TEVA-SUMATRIPTAN DF

100MG · TABLET · TEVA CANADA LIMITED

DIN 02286831 · ended Nov 12, 2025 · Disruption of the manufacture of the drug.

Discontinued

IMITREX DF - TAB 50MG

50MG · TABLET · GLAXOSMITHKLINE INC

DIN 02212153

Resolved

IMITREX DF - TAB 50MG

50MG · TABLET · GLAXOSMITHKLINE INC

DIN 02212153 · ended Oct 27, 2025 · Disruption of the manufacture of the drug.

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

What's happening

Sumatriptan is currently affected by an active shortage report filed with Health Canada by MYLAN PHARMACEUTICALS ULC.

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.

Sumatriptan is classified under “ANTIMIGRAINE PREPARATIONS” (ATC N02CC).

Recent changes

Sep 2, 2026 Status changed
Sep 2, 2026 Estimated end date pushed back : Nov 24, 2026 → Feb 9, 2027
Sep 2, 2026 Estimated end date pushed back : Dec 22, 2026 → Feb 9, 2027
Aug 24, 2026 Estimated end date moved earlier : Dec 29, 2026 → Dec 22, 2026
Aug 5, 2026 New report filed
Jul 20, 2026 New report filed

Common questions

What is Sumatriptan used for?

A triptan used to relieve migraine and cluster headaches.

When will Sumatriptan be back in stock in Canada?

The latest manufacturer estimate is Feb 9, 2027. Estimates are self-reported and often slip; this page updates automatically when they change.

Why is Sumatriptan 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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Possible alternatives in the same class (antimigraine preparations)

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.

Dihydroergotamine No current shortage Frovatriptan (Frova) No current shortage Galcanezumab (Emgality) No current shortage Naratriptan (Amerge) No current shortage Almotriptan (Axert) Partial shortage 1 of 10 reported products affected Eletriptan (Relpax) Partial shortage 2 of 18 reported products affected · est. return Oct 13, 2026

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.