rxstat › Shortages › Pyridostigmine Bromide

Pyridostigmine Bromide (Mestinon, Mestinon-Sr) shortage status

No current shortage

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

Pyridostigmine Bromide has no current shortage reported in Canada. It has been in shortage before; the history is below.

A cholinesterase inhibitor used to treat muscle weakness in myasthenia gravis.

Products affected
0 / 4
Reports on file
6

Shortage history

2024 2025 2026

Shortage history (red bands = periods in shortage).

Reports by product

The DIN is printed on your prescription label.

Resolved
RIVA-PYRIDOSTIGMINE
60MG · TABLET · LABORATOIRE RIVA INC.
DIN 02495643 · ended Mar 17, 2025 · Delay in shipping of the drug.
Resolved
JAMP PYRIDOSTIGMINE BROMIDE
60MG · TABLET · JAMP PHARMA CORPORATION
DIN 02508362 · ended Mar 21, 2024 · Demand increase for the drug.
Resolved
MESTINON
60MG · TABLET · BAUSCH HEALTH, CANADA INC.
DIN 00869961 · ended Mar 27, 2024 · Demand increase for the drug.
Resolved
RIVA-PYRIDOSTIGMINE
60MG · TABLET · LABORATOIRE RIVA INC.
DIN 02495643 · ended Mar 30, 2021 · Demand increase for the drug.
Resolved
MESTINON TAB 60MG USP
60MG · TABLET · VALEANT CANADA LP/VALEANT CANADA S.E.C.
DIN 00869961 · ended Jul 22, 2019 · delay in production
Resolved
MESTINON-SR
180MG · TABLET (EXTENDED-RELEASE) · VALEANT CANADA LP/VALEANT CANADA S.E.C.
DIN 00869953 · ended Apr 12, 2018

What's happening

There are no active shortage reports for Pyridostigmine Bromide. Health Canada has 6 historical reports on file for this drug, so supply has been disrupted before; the change log below shows the history.

Pyridostigmine Bromide is classified under “PARASYMPATHOMIMETICS” (ATC N07AA).

Recent changes

Common questions

What is Pyridostigmine Bromide used for?

A cholinesterase inhibitor used to treat muscle weakness in myasthenia gravis.

When will Pyridostigmine Bromide be back in stock in Canada?

Pyridostigmine Bromide has no active shortage; supply is normal per Health Canada reports.

Why is Pyridostigmine Bromide in shortage?

It isn't currently. Past reports and their reasons are listed above.

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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Related drugs (parasympathomimetics)

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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.