Synthetic Opioids The Drugs Responsible for Most of the Overdose Deaths in 2017 The Alarming Surge of Fentanyl Laced Vapes: A Lethal PharmChek 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 Police uncover opioid laced vapes in Australian first bust 9 News Australia Drug Bust Reveals Vapes Laced With Deadly Synthetic Opioid 10 News