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We examined trends in emergency department (ED) presentation rates for acetaminophenrelated poisonings across Canada. A total of 27123 cases of poisoning were seen in the electronic Canadian Hospitals Injury Reporting and Prevention Program (eCHIRPP) sentinel sites between April 2011 and February 2019; of these, 13.7% were related to acetaminophen use. A significant decreasing trend for both sexes was observed for unintentional poisonings (males: −10.3%; females: −8.0%). For intentional poisonings, there was a significant decrease among females only (−5.9%). Females have consistently displayed higher rates of ED presentations for both unintentional and intentional poisoning.