Home / Diphenhydramine / Canada
CA ATC R06AA02 · updated 2 Nov 2026
Diphenhydramine shortage in Canada
Is there a Diphenhydramine shortage in Canada?
Yes. As of 2 Nov 2026, 3 Diphenhydramine products are reported short in Canada, the first since 11 Apr 2014. The company estimate for the return is 31 Jan 2027. Main reason: manufacturing problem.
Also short in Sweden. All countries.
Affected products in Canada
| Country | Product | Company | Since | Expected back | Reason |
|---|---|---|---|---|---|
| CA | NADRYL 50MG (100) | LABORATOIRE RIVA INC | 11 Apr 2014 | not given | Manufacturing problem Disruption of the manufacture of the drug |
| CA | UNISOM SLEEPGELS EXTRA STRENGTH (20 capsules) | PALADIN LABS INC. | 25 Oct 2023 | not given | Distribution or logistics Delay in shipping of the drug |
| CA | DIPHENIST (10 x 1 mL vial / fiole) anticipated | OMEGA LABORATORIES LIMITED | 15 Nov 2026 | 31 Jan 2027 | Manufacturing problem Disruption of the manufacture of the drug |
Source
Health Canada, Health Product Shortages Canada. Official list. Mandatory company reports since 2017: actual and anticipated shortages, plus products about to be discontinued.