Animal tranquillizers are increasingly present in Toronto’s unregulated drug supply. Here’s why some are concerned.  CTV NewsHigh-potency additives to opioids making response, treatment by community workers difficult  CityNews TorontoToronto Public Health issues drug alert after 3 suspected opioid overdose deaths  CP24Drug alert issued for city after three die from suspected opioid overdoses  Toronto StarWARMINGTON: Fentanyl laced with veterinary drug poses deadly risks in Toronto  Toronto Sun