A new synthetic drug, known as isotonitazen or ISO, has begun to spread in illicit markets and to generate concern for its potency, which can exceed between five and nine times that of fentanyl, according to the United Nations Office on Drugs and Crime (UNODC). ISO belongs to Nitazens, a family of synthetic opioids that were identified in the World Drug Report 2026 as one of the new threats on the market. "The emergence in the market of Nitazens…
A new synthetic drug, known as isotonitazen or ISO, has begun to spread in illicit markets and to generate concern for its potency, which can exceed between five and nine times that of fentanyl, according to the United Nations Office on Drugs and Crime (UNODC). ISO belongs to Nitazens, a family of synthetic opioids that were identified in the World Drug Report 2026 as one of the new threats on the market. "The emergence in the market of Nitazens…