Deadly nitazene vapes: First Australian arrest made in Sydney The Australian It's February. How heart smart are St. Louisans? 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 People are dying': rise of nitazenes should be treated as pandemic, injecting centre head says Opioids The Guardian