Never heard of ISO before.
Apparently it's a new drug and they are all over it in San Fran.
Apparently it's a new drug and they are all over it in San Fran.
Quote:
ISO refers to isotonitazene, a nitazene-class synthetic opioid ... up to 20 times more potent than fentanyl, raising overdose risks and complicating naloxone reversal.
This is the scene in San Francisco's Tenderloin neighborhood. They're smoking ISO, a new drug that's up to 20 times more powerful than fentanyl. pic.twitter.com/KrR2GmQPKg
— Christopher F. Rufo ⚔️ (@christopherrufo) June 4, 2026
