Deadly synthetic opioid cychlorphine emerges in San Francisco, more potent than fentanyl

An autopsy of a teenager in San Francisco has confirmed the presence of cychlorphine, a synthetic opioid far more potent than fentanyl, marking its first known appearance in the city. City officials and the victim's mother are mobilizing to curb its spread, but the drug's extreme potency poses a heightened overdose risk. This signals a potential new phase in the opioid crisis, with implications for public health and emergency response.