Poisoning Outbreak: Aconite Poisoning at Markham, Ontario Restaurant

Poisoning Outbreak: Aconite Poisoning at Markham, Ontario Restaurant

From The Poison Lab by Clinical Toxicology LLC

July 10, 2025 · 1h 20m · Episode 38

About this episode

This episode investigates a mass poisoning incident caused by aconite at a restaurant in Markham, Ontario.

Support the show Review the show where ever your listening Get Messages from Toxo (Join the Newsletter!) Join as a supporting member Ad free episodes Bonus content and early access Discounts and give aways on GOTA PICCEM Mushroom card game The GOTTA PICCEM Poisonous Mushroom Game! The Poisonus Fungus Amongus Children's Book! Full book reading (6 minutes!) Tox trinkets (Rep the show at home!) Reach the show Email: Toxtalk1@gmail.com More Show Resources Ryan's Medical Games and Resources Show Website The Poison Lab: Outbreak – Markham Aconite Poisoning On August 29, 2022, twelve diners at a Markham, Ontario restaurant fell critically ill with vomiting, numbness, and life-threatening arrhythmias. The culprit? A deadly plant toxin: aconite. In this episode—the first of a new Poison Lab Outbreak series—we go inside the Markham mass poisoning case. Join host Ryan Feldman, clinical toxicologist and emergency medicine pharmacist, as he investigates how a rare and lethal toxin ended up in a restaurant spice jar and nearly cost lives. You’ll hear firsthand from the experts who responded to the outbreak: Dr. Jessica Kent, toxicology fellow at the time at the University of Toronto Dr…

People in this episode

Host: Ryan Feldman

Guests: Dr. Jessica Kent, Dr. Abinhay Sathya, Dr. Margaret Thompson, Dr. Randy Purves, Bryn Shurmer

Topics covered

  • poisoning outbreak
  • aconite poisoning
  • toxicology
  • restaurant safety
  • public health

Keywords

  • aconite
  • poisoning
  • toxicology
  • Markham
  • restaurant
  • public health
  • emergency medicine

Mentioned in this episode

Organizations: University of Toronto, Markham Stouffville Hospital, Ontario Poison Centre, Canadian Food Inspection Agency

Places: Markham, Ontario

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