Source: Health Canada shortage reports · Updated Jul 23, 2026
Some Acyclovir products are in shortage in Canada (3 of 20 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 Aug 14, 2026.
An antiviral used to treat herpes virus infections such as cold sores and shingles.
Products affected
3 / 20
In shortage since
Jun 16, 2020
Est. full return
Aug 14, 2026
Reports on file
89
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
APO-ACYCLOVIR OINTMENT
5% · OINTMENT · APOTEX INC
DIN 02477130 · since Dec 16, 2025, est. end Aug 14, 2026 · Disruption of the manufacture of the drug.
Active shortage
ACYCLOVIR SODIUM INJECTION
50MG · SOLUTION · FRESENIUS KABI CANADA LTD
DIN 02236926 · since Sep 18, 2025, est. end Jul 2, 2026 · Disruption of the manufacture of the drug.
Active shortage
ACYCLOVIR SODIUM INJECTION
50MG · SOLUTION · STERIMAX INC
DIN 02456524 · since Jun 16, 2020, no end estimate · Delay in shipping of the drug.
Active shortage
ACYCLOVIR SODIUM INJECTION
50MG · SOLUTION · STERIMAX INC
DIN 02456524 · since Jun 16, 2020, no end estimate · Delay in shipping of the drug.
Resolved
TARO-ACYCLOVIR
5% · OINTMENT · TARO PHARMACEUTICALS INC
DIN 02522306 · ended Jun 29, 2026 · Disruption of the manufacture of the drug.
Resolved
ACYCLOVIR SODIUM INJECTION
50MG · SOLUTION · AURO PHARMA INC
DIN 02494558 · ended Feb 18, 2025 · Demand increase for the drug.
Resolved
ACYCLOVIR SODIUM INJECTION
50MG · SOLUTION · FRESENIUS KABI CANADA LTD
DIN 02236926 · ended Jun 10, 2026 · Demand increase for the drug.
Resolved
MYLAN-ACYCLOVIR
800MG · TABLET · MYLAN PHARMACEUTICALS ULC
DIN 02242464 · ended May 26, 2026 · Disruption of the manufacture of the drug.
Resolved
APO-ACYCLOVIR OINTMENT
5% · OINTMENT · APOTEX INC
DIN 02477130 · ended Feb 19, 2026 · Disruption of the manufacture of the drug.
Resolved
MYLAN-ACYCLOVIR
200MG · TABLET · MYLAN PHARMACEUTICALS ULC
DIN 02242784 · ended Jan 14, 2026 · Disruption of the manufacture of the drug.
Resolved
TARO-ACYCLOVIR
5% · OINTMENT · TARO PHARMACEUTICALS INC
DIN 02522306 · ended Dec 18, 2025 · Disruption of the manufacture of the drug.
Resolved
ACYCLOVIR SODIUM INJECTION
50MG · SOLUTION · EUGIA PHARMA INC.
DIN 02531224 · ended Nov 19, 2025 · Requirements related to complying with good manufacturing practices.
Showing 12 of 60 reports. All reports are on file with Health Canada.
What's happening
Acyclovir is currently affected by 3 active shortage reports filed with Health Canada by APOTEX INC, FRESENIUS KABI CANADA LTD, STERIMAX INC.
The reported causes are: disruption of the manufacture of the drug; delay in shipping 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.
Acyclovir is classified under “CHEMOTHERAPEUTICS FOR TOPICAL USE” (ATC D06BB).
Recent changes
Jul 23, 2026
Estimated end date pushed back : Jul 24, 2026 → Aug 14, 2026
Jul 17, 2026
Estimated end date pushed back : Jul 17, 2026 → Jul 24, 2026
Jul 15, 2026
Shortage resolved
Jul 9, 2026
Estimated end date pushed back : Jul 10, 2026 → Jul 17, 2026
Common questions
What is Acyclovir used for?
An antiviral used to treat herpes virus infections such as cold sores and shingles.
When will Acyclovir be back in stock in Canada?
The latest manufacturer estimate is Aug 14, 2026. Estimates are self-reported and often slip; this page updates automatically when they change.
Why is Acyclovir 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.