Ten Canadians have died and at least 74 had adverse reactions after taking the medication Tamiflu.
Two weeks ago, international warnings were posted of adverse reactions to the medication among children and youth.
Health Canada didn't issue a public update about the flu drug until Wednesday.
Health Canada's bulletin said that since February 2000, 84 Canadians have had adverse reactions after taking the drug, including 10 who died and seven adults who reported "psychiatric adverse events."
This year alone there was 13 reported reactions to the drug including 3 women aged 95, 88 and 81 that died.
Tamiflu is used to treat the flu and combat the H5N1 avian flu virus.
Health Canada spokesman Alastair Sinclair says there is no reason for Canadians to be worried.
