Sumatriptan (Imitrex, Imitrex Df -) shortage status
Shortage anticipated
Source: Health Canada shortage reports · Updated Jul 20, 2026
A shortage of Sumatriptan is anticipated but not yet confirmed. 1 product(s) have anticipated-shortage reports on file with Health Canada.
A triptan used to relieve migraine and cluster headaches.
Products affected
0 / 23
Reports on file
122
Shortage history
Shortage history (red bands = periods in shortage).
Reports by product
The DIN is printed on your prescription label.
Anticipated
MYLAN-SUMATRIPTAN
100MG · TABLET · MYLAN PHARMACEUTICALS ULC
DIN 02268922 · 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.
Resolved
TEVA-SUMATRIPTAN DF
50MG · TABLET · TEVA CANADA LIMITED
DIN 02286823 · ended Oct 22, 2025 · Disruption of the manufacture of the drug.
Showing 12 of 60 reports. All reports are on file with Health Canada.
What's happening
A manufacturer has told Health Canada it expects supply of Sumatriptan to fall short of demand. Anticipated shortages sometimes resolve without patients noticing; this page updates as soon as the status changes.
Sumatriptan is classified under “ANTIMIGRAINE PREPARATIONS” (ATC N02CC).
Recent changes
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?
Manufacturers have not provided a reliable end date. This page updates automatically as soon as an estimate is filed.
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.
Email alerts
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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.