Nitazenes causing overdose in people who have taken fake oxycodone tablets

Two people have been hospitalised in NSW with severe opioid overdose caused by isotonitazepyne (also known as N-pyrrolidino isotonitazene). The fake oxycodone tablets have been described as yellow unmarked round tablets, sold as ‘OxyContin 40 mg’. A similar yellow fake oxycodone tablet with the same nitazene was recently detected by CanTEST in Canberra. Last Updated: 26 November 2025 Know the risks Effects

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