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California Fentanyl Vaccine Cuts Brain Levels 70%, Prevents Death

6/16/2026

38 5 Full Breakdown

Summary

Story summary

Researchers in California created a vaccine that cut brain fentanyl by 70% and stopped fatal respiratory depression in mice.
The vaccine generated antibodies that bound fentanyl and analogs carfentanil and furanylfentanyl but not morphine.
Scientists attached a modified fentanyl molecule to a carrier protein and gave mice four doses over eight weeks.
The research, led by Kim Janda and Arran Stewart and published on June 15, 2026, plans trials.

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Story summary

Researchers in California created a vaccine that cut brain fentanyl by 70% and stopped fatal respiratory depression in mice.
The vaccine generated antibodies that bound fentanyl and analogs carfentanil and furanylfentanyl but not morphine.
Scientists attached a modified fentanyl molecule to a carrier protein and gave mice four doses over eight weeks.
The research, led by Kim Janda and Arran Stewart and published on June 15, 2026, plans trials.