Warning of potentially deadly synthetic opioid 19/07/2024 FacebookTwitterEmail WARNING: Synthetic opioid Protonitazene may be contaminating illicitly-sourced oxycodone tablets and potentially other non-opioid illicit drugs, such as methamphetamine. (File) South Australians are being warned about the presence of a potentially deadly synthetic opioid in illicit drugs after an Adelaide […] Subscribe or Login to see the rest of the content. Username Password Remember Me Forgot Password