rxstat › Shortages › Interferon Alfa-2b

Interferon Alfa-2b shortage status

Discontinued

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

Interferon Alfa-2b products have been discontinued in Canada. See the reports below for which products and when.
Products affected
0 / 5
Reports on file
28

Reports by product

Discontinued
INTRON A
6000000UNIT · SOLUTION · MERCK CANADA INC
DIN 02238674
Discontinued
INTRON A
10000000UNIT · SOLUTION · MERCK CANADA INC
DIN 02238675
Discontinued
INTRON A
10000000UNIT · SOLUTION · MERCK CANADA INC
DIN 02238675
Resolved
INTRON A
6000000UNIT · SOLUTION · MERCK CANADA INC
DIN 02238674 · ended Aug 9, 2019 · Demand increase for the drug.
Discontinued
INTRON A
25000000UNIT · LIQUID · MERCK CANADA INC
DIN 02240694
Discontinued
INTRON A
50000000UNIT · LIQUID · MERCK CANADA INC
DIN 02240695
Discontinued
INTRON A
15000000UNIT · LIQUID · MERCK CANADA INC
DIN 02240693
Resolved
INTRON A
6000000UNIT · SOLUTION · MERCK CANADA INC
DIN 02238674 · ended Dec 3, 2018 · Delay in shipping of the drug.
Resolved
INTRON A
25000000UNIT · LIQUID · MERCK CANADA INC
DIN 02240694 · ended Aug 13, 2018 · Delay in shipping of the drug.
Resolved
INTRON A
15000000UNIT · LIQUID · MERCK CANADA INC
DIN 02240693 · ended Jun 5, 2018 · Requirements related to complying with good manufacturing practices.
Resolved
INTRON A
25000000UNIT · LIQUID · MERCK CANADA INC
DIN 02240694 · ended May 25, 2018 · Requirements related to complying with good manufacturing practices.
Resolved
INTRON A
50000000UNIT · LIQUID · MERCK CANADA INC
DIN 02240695 · ended May 25, 2018 · Requirements related to complying with good manufacturing practices.

Showing 12 of 28 reports. All reports are on file with Health Canada.

What's happening

One or more 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.

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

Recent changes

Common questions

When will 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 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.