Fentanyl Surpasses Heroin As Drug Most Often Involved In Deadly Overdoses - When fentanyl, a synthetic opioid 50 to 100 times more powerful than morphine, infiltrated the drug supply in the U.S. it had an immediate, dramatic effect on the overdose rate, finds a new CDC report.

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Fentanyl Surpasses Heroin As Drug Most Often Involved In Deadly Overdoses - When fentanyl, a synthetic opioid 50 to 100 times more powerful than morphine, infiltrated the drug supply in the U.S. it had an immediate, dramatic effect on the overdose rate, finds a new CDC report.