rxstat › Shortages › Mefenamic Acid

Mefenamic Acid (Ponstan) shortage status

Partial shortage

Source: Health Canada shortage reports · Updated Nov 5, 2026

Some Mefenamic Acid products are in shortage in Canada (1 of 2 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 Nov 20, 2026.

A nonsteroidal anti-inflammatory drug used to relieve pain, including menstrual pain.

Products affected
1 / 2
In shortage since
Oct 6, 2026
Est. full return
Nov 20, 2026
Reports on file
10
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Shortage history

2023 2024 2025 2026

Shortage history (red bands = periods in shortage).

Reports by product

The DIN is printed on your prescription label.

Active shortage
MEFENAMIC
250MG · CAPSULE · AA PHARMA INC
DIN 02229452 · since Oct 6, 2026, est. end Nov 20, 2026 · Disruption of the manufacture of the drug.
Resolved
MEFENAMIC
250MG · CAPSULE · AA PHARMA INC
DIN 02229452 · ended Jul 22, 2026 · Disruption of the manufacture of the drug.
Resolved
MEFENAMIC
250MG · CAPSULE · AA PHARMA INC
DIN 02229452 · ended Mar 17, 2025 · Disruption of the manufacture of the drug.
Resolved
MEFENAMIC
250MG · CAPSULE · AA PHARMA INC
DIN 02229452 · ended Dec 10, 2024 · Disruption of the manufacture of the drug.
Resolved
MEFENAMIC
250MG · CAPSULE · AA PHARMA INC
DIN 02229452 · ended Sep 4, 2024 · Disruption of the manufacture of the drug.
Resolved
MEFENAMIC
250MG · CAPSULE · AA PHARMA INC
DIN 02229452 · ended Jan 26, 2024 · Disruption of the manufacture of the drug.
Resolved
MEFENAMIC
250MG · CAPSULE · AA PHARMA INC
DIN 02229452 · ended Jul 13, 2021 · Disruption of the manufacture of the drug.
Discontinued
PONSTAN
250MG · CAPSULE · AA PHARMA INC
DIN 00155225
Resolved
PONSTAN
250MG · CAPSULE · AA PHARMA INC
DIN 00155225 · ended Jul 28, 2020 · Disruption of the manufacture of the drug.
Discontinued
MEFENAMIC
250MG · CAPSULE · AA PHARMA INC
DIN 02229452

What's happening

Mefenamic Acid is currently affected by an active shortage report filed with Health Canada by AA PHARMA INC.

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.

Mefenamic Acid is classified under “ANTIINFLAMMATORY/ANTIRHEUMATIC PROD.,NON-STEROIDS” (ATC M01AG).

Recent changes

Common questions

What is Mefenamic Acid used for?

A nonsteroidal anti-inflammatory drug used to relieve pain, including menstrual pain.

When will Mefenamic Acid be back in stock in Canada?

The latest manufacturer estimate is Nov 20, 2026. Estimates are self-reported and often slip; this page updates automatically when they change.

Why is Mefenamic Acid 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 (antiinflammatory/antirheumatic prod.,non-steroids)

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.

Misoprostol Diclofenac (Arthrotec) No current shortage Piroxicam No current shortage Sulindac No current shortage Celecoxib (Celebrex) Partial shortage 2 of 31 reported products affected · est. return Nov 13, 2026 Diclofenac (Voltaren Rapide) Partial shortage 1 of 8 reported products affected Ibuprofen (Novo-Profen) Partial shortage 1 of 14 reported products affected

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.