Synthetic Opioids The Drugs Responsible for Most of the Overdose Deaths in 2017 More than 1200 vape vials laced with nitazene, a synthetic opioid 200 times more potent than morphine, were sold across Sydney, sparking Australia's first arrest over vapes spiked with the drug. Police Child treated for overdose as vapes spiked with nitazenes Police uncover opioid laced vapes in Australian first bust 9 News Australia Specials Surterra Medical Marijuana Dispensaries