Why drug shortages happen in Canada
On an average day, several hundred drugs are in shortage in Canada. That is not a sign of one crisis; it is the normal operating state of a fragile global supply chain, and it has been getting steadily worse since manufacturers were first required to report shortages in 2017.
The main causes
Manufacturing disruption is the reason cited most often in Health Canada filings. Most generic drugs are made in a small number of plants, and the active ingredients often come from a single facility overseas. When one plant has a contamination finding, an inspection failure, or simply a maintenance shutdown, every product that depends on it can go short worldwide.
Demand surges caused the shortages most Canadians remember: children's pain and fever medicine and amoxicillin in 2022 during a brutal respiratory season, and Ozempic when demand for GLP-1 drugs exploded. Manufacturers plan production months ahead; when demand doubles, the system cannot respond quickly.
Economics is the quiet cause. Generic drugs sell for pennies, so margins are thin, so companies consolidate production and keep inventories lean. Canada is a small market with aggressive price regulation, which means when supply is tight globally, we are not always first in line.
Discontinuations are shortages that never end: a company decides a product is no longer worth making. These are also reported to Health Canada, and rxstat tracks them alongside shortages.
Why Canada specifically
Canada imports the vast majority of its medications and their raw ingredients. We also have provincial purchasing systems that concentrate each drug's supply in a few winning bidders, which lowers prices but means fewer alternative suppliers when one fails. When Health Canada designates a shortage Tier 3, it means the drug has few or no alternatives and the health system impact is greatest.
What this means for you
Most shortages resolve without patients noticing, because pharmacists quietly substitute another manufacturer's version. The ones that hurt are molecule-wide shortages where every supplier is affected. That distinction, one supplier versus all of them, is exactly what each rxstat drug page computes. If your medication is affected, see what to do when your medication is in shortage.
Written and maintained by rxstat. Sourced from Health Canada's mandatory shortage reporting; not medical advice. Disclaimer.