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The Science Espresso:Nitazene opioids

A new and alarming trend

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The Researcher Daily
Oct 12, 2025
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A potent class of synthetic opioids known as nitazenes is rapidly emerging worldwide, raising serious concern among researchers. Originally developed in the 1950s as painkillers but never approved due to their extreme risk, nitazenes are now appearing on the dark web as fentanyl listings decline.

Close up of fentanyl being smoked off a piece of foil through a glass pipe

Key facts:

  • Up to 500 times stronger than morphine; even tra…

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