Hallberg's Picture of Health: What is fentanyl?
The Midwest Medical Examiner's Office autopsy report states that Prince died of a fentanyl overdose — and that the drug was self-administered. The Carver County Sheriff's Office says it will continue to investigate.
MPR News regular medical analyst Dr. Jon Hallberg explains what fentanyl is, what it's used for and how opioids can cause a deadly overdose.
Click on the audio player above to hear the entire conversation.
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