Toxic Drugs Surge: May Sets Grim Record

May has set a grim record for drug poisoning incidents in Guelph and Wellington County, marking the highest numbers since local surveillance began. Wellington-Dufferin-Guelph Public Health data indicates a significant rise, with at least 269 incidents reported in the first half of 2026, more than doubling the same period last year. The majority of these incidents, 92 percent, occurred within the City of Guelph, while most recorded deaths were in Wellington County.

The Wellington Guelph Drug Strategy attributes this surge to a dangerously toxic and unpredictable drug supply. Substances such as medetomidine, a veterinary sedative, are now frequently detected in street drugs. This adulteration can lead to complex overdoses requiring multiple doses of naloxone, the overdose-reversing medication.

In parallel, Waterloo Region reported 38 suspected overdoses and two suspected drug-related deaths between May 27 and May 31, 2026. Drug-checking services have identified fentanyl contaminated with potent substances like medetomidine, carfentanil, and nitazenes, as well as fentanyl mixed with nefopam. Methamphetamine samples have also tested positive for xylazine, a sedative known to cause prolonged unresponsiveness.

Public health officials are strongly advising people who use substances to avoid using alone and to contact the National Overdose Response Service for phone monitoring and support. Recommended harm reduction strategies include starting with low doses, avoiding mixing substances, and utilizing available drug-checking services like those offered by Sanguen Health Centre.