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Event Brief

New Drug Crisis Emerges in Philadelphia

Medetomidine mixed with fentanyl causes severe withdrawal, overwhelming hospitals.
WHO: Residents of Philadelphia, healthcare providers
WHAT: Withdrawal crisis due to a new drug combination
WHEN: Dec 14, 2025 at 7:00 PM ET
WHERE: Philadelphia, Pennsylvania
WHY: The combination of medetomidine and fentanyl is leading to overdoses and withdrawal symptoms.
Sources (1): New York Times

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