rxstat › Shortages › Water Interferon Alfa-2b

Water Interferon Alfa-2b shortage status

Discontinued

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

Water Interferon Alfa-2b products have been discontinued in Canada. See the reports below for which products and when.
Products affected
0 / 2
Reports on file
6

Reports by product

Discontinued
INTRON A
1ML 10000000UNIT · LIQUID POWDER FOR SOLUTION · MERCK CANADA INC
DIN 02223406
Resolved
INTRON A
10000000UNIT 1ML · LIQUID POWDER FOR SOLUTION · MERCK CANADA INC
DIN 02223406 · ended Mar 12, 2021 · Delay in shipping of the drug.
Resolved
INTRON A
1ML 10000000UNIT · LIQUID POWDER FOR SOLUTION · MERCK CANADA INC
DIN 02223406 · ended Jan 31, 2019 · Delay in shipping of the drug.
Resolved
INTRON A
1ML 10000000UNIT · LIQUID POWDER FOR SOLUTION · MERCK CANADA INC
DIN 02223406 · ended Aug 22, 2017 · Demand increase for the drug.
Discontinued
INTRON A
MERCK CANADA INC
DIN 02231651
Resolved
INTRON A
1ML 10000000UNIT · LIQUID POWDER FOR SOLUTION · MERCK CANADA INC
DIN 02223406 · ended Jul 14, 2017 · Demand increase for the drug.

What's happening

One or more Water Interferon Alfa-2b products have been permanently discontinued by their manufacturers. If your product is affected, ask your pharmacist about equivalent products still on the market.

Water Interferon Alfa-2b is classified under “IMMUNOSTIMULANTS” (ATC L03AB).

Recent changes

Common questions

When will Water Interferon Alfa-2b 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 Water Interferon Alfa-2b 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.

Related drugs (immunostimulants)

Widespread shortagePeginterferon Alfa-2a1 of 1 reported products affected · est. return Jun 30, 2026Partial shortageBacillus Calmette-guerin1 of 1 reported products affected · est. return Dec 31, 2027No current shortageAldesleukinDiscontinuedBacillus Calmette-guerin0 of 1 reported products affectedNo current shortageFilgrastimNo current shortageGlatiramer

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.