Child treated for overdose as vapes spiked with nitazenes BBC News Explainer: nitazenes and xylazine a cause for concern News Chemistry World Stay informed: what are nitazenes? Here's what Missourians should know. Nitazenes are synthetic opioids that are being found across the state in counterfeit pills, powders, and vapes. They are more potent than Nitazines found in black market vapes as criminals make new variations to evade detection ABC News