Carbachol (Miostat Ophthalmic) shortage status

Shortage anticipated

Source: Health Canada shortage reports · Updated Sep 24, 2026

A shortage of Carbachol is anticipated but not yet confirmed. 1 product(s) have anticipated-shortage reports on file with Health Canada.

Products affected

0 / 1

Reports on file

Shortage history

Shortage history (red bands = periods in shortage).

Reports by product

The DIN is printed on your prescription label.

Anticipated

MIOSTAT OPHTHALMIC LIQ 0.01%

.01% · SOLUTION · ALCON CANADA INC

DIN 00042544 · Disruption of the manufacture of the drug.

Resolved

MIOSTAT OPHTHALMIC LIQ 0.01%

.01% · SOLUTION · ALCON CANADA INC

DIN 00042544 · ended Apr 14, 2023 · Component shortage of backing paper on product is causing delay

Resolved

MIOSTAT OPHTHALMIC LIQ 0.01%

.01% · SOLUTION · ALCON CANADA INC

DIN 00042544 · ended Jun 20, 2019 · Demand increase - Limited stock available will be allocated to Customers

Resolved

MIOSTAT OPHTHALMIC LIQ 0.01%

.01% · SOLUTION · ALCON CANADA INC

DIN 00042544 · ended Jun 20, 2017 · Disruption of the manufacture of the drug.

What's happening

A manufacturer has told Health Canada it expects supply of Carbachol to fall short of demand. Anticipated shortages sometimes resolve without patients noticing; this page updates as soon as the status changes.

Carbachol is classified under “ANTIGLAUCOMA PREPARATIONS AND MIOTICS” (ATC S01EB).

Recent changes

Sep 24, 2026 New report filed

Common questions

When will Carbachol 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 Carbachol 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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Possible alternatives in the same class (antiglaucoma preparations and miotics)

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.

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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.