For years, fentanyl has flooded into the American drug market, driving a surge in overdose deaths across the country. Other drugs, like cocaine, are increasingly tainted with the synthetic opioid. We spoke to advocates Theo Krzywicki and Kalie Shorr who say a tiny test strip can help people avoid fentanyl, and WSJ's Julie Wernau explains why fentanyl is showing up everywhere.

Further Reading:

- Fentanyl Test Strips on the Dance Floor? Partygoers Face New Reality 

- Three New Yorkers Ordered Cocaine From the Same Delivery Service. All Died From Fentanyl. 

- The Fentanyl Crisis 

Further Listening:

- Purdue's $4.5 Billion Opioid Settlement Got Thrown Out. Now What?  

- States Got Hooked on Tobacco Money. Are Opioids Next?  

- Two Days of Reckoning for Opioid Makers  

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