RACGP GPs warned amid 'worrying spike' in nitazenes Sydney's top doctor raises alarm after vapers develop opioid addiction Stuff 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 What's Actually in Your Vape: A Complete Chemical Breakdown Explainer: nitazenes and xylazine a cause for concern News Chemistry World