Halton Regional Police are putting out a warning after 12 drug overdoses have been recorded in the last 11 days.
Two of the overdoses were fatal and involved unknown substances.
So far, officials believe a variety of drugs have contributed to the surge in overdoses, including cocaine, heroin, fentanyl, Xanax, MDMA, Ketamine, and oxycodone.
Users are reminded to never use alone and to familiarize themselves with signs of a potential overdose.