Source: Health Canada shortage reports · Updated Aug 10, 2026
Some Letrozole products are in shortage in Canada (3 of 13 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 Sep 15, 2026.
An aromatase inhibitor used to treat hormone receptor positive breast cancer.
Products affected
3 / 13
In shortage since
Aug 15, 2024
Est. full return
Sep 15, 2026
Reports on file
32
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
SANDOZ LETROZOLE
2.5MG · TABLET · SANDOZ CANADA INCORPORATED
DIN 02344815 · since Jul 20, 2026, est. end Aug 7, 2026 · Delay in shipping of the drug.
Active shortage
M-LETROZOLE
2.5MG · TABLET · MANTRA PHARMA INC
DIN 02549972 · since Jul 17, 2026, est. end Sep 15, 2026 · Delay in shipping of the drug.
Active shortage
LETROZOLE
2.5MG · TABLET · SIVEM PHARMACEUTICALS ULC
DIN 02524244 · since Aug 15, 2024, no end estimate · Disruption of the manufacture of the drug.
Resolved
MINT-LETROZOLE
2.5MG · TABLET · MINT PHARMACEUTICALS INC
DIN 02508109 · ended May 5, 2026 · Disruption of the manufacture of the drug.
Resolved
LETROZOLE
2.5MG · TABLET · SANIS HEALTH INC
DIN 02504472 · ended May 1, 2026 · Disruption of the manufacture of the drug.
Resolved
JAMP LETROZOLE TABLETS
2.5MG · TABLET · JAMP PHARMA CORPORATION
DIN 02541912 · ended Apr 1, 2026 · Disruption of the manufacture of the drug.
Resolved
ACH-LETROZOLE
2.5MG · TABLET · ACCORD HEALTHCARE INC
DIN 02338459 · ended Dec 29, 2025 · Requirements related to complying with good manufacturing practices.
Resolved
RIVA-LETROZOLE
2.5MG · TABLET · LABORATOIRE RIVA INC.
DIN 02398656 · ended Mar 27, 2025 · Requirements related to complying with good manufacturing practices.
Resolved
TEVA-LETROZOLE
2.5MG · TABLET · TEVA CANADA LIMITED
DIN 02343657 · ended Mar 10, 2025 · Disruption of the manufacture of the drug.
Resolved
SANDOZ LETROZOLE
2.5MG · TABLET · SANDOZ CANADA INCORPORATED
DIN 02344815 · ended Mar 3, 2025 · Delay in shipping of the drug.
Resolved
APO-LETROZOLE
2.5MG · TABLET · APOTEX INC
DIN 02358514 · ended Nov 7, 2024 · Disruption of the manufacture of the drug.
Resolved
TEVA-LETROZOLE
2.5MG · TABLET · TEVA CANADA LIMITED
DIN 02343657 · ended Sep 10, 2024 · Disruption of the manufacture of the drug.
Showing 12 of 32 reports. All reports are on file with Health Canada.
What's happening
Letrozole is currently affected by 3 active shortage reports filed with Health Canada by SANDOZ CANADA INCORPORATED, MANTRA PHARMA INC, SIVEM PHARMACEUTICALS ULC.
The reported causes are: delay in shipping of the drug; 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.
Letrozole is classified under “HORMONE ANTAGONISTS AND RELATED AGENTS” (ATC L02BG).
Recent changes
Aug 6, 2026
Status changed
Aug 4, 2026
New report filed
Jul 20, 2026
New report filed
Common questions
What is Letrozole used for?
An aromatase inhibitor used to treat hormone receptor positive breast cancer.
When will Letrozole be back in stock in Canada?
The latest manufacturer estimate is Sep 15, 2026. Estimates are self-reported and often slip; this page updates automatically when they change.
Why is Letrozole 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.