For more than a century, Americans have had a love-hate relationship with cocaine. Once viewed as a cure-all tonic for everything from hemorrhoids to morphine addiction, the drug has inspired infamous rock songs and brought people to their knees.

In the third and final segment of Narcotica’s ‘Speed Up, Slow Down’ series on stimulants, reporter Christopher Moraff examines the strange and perplexing history of cocaine and it’s latest demonization—fentanyl adulteration. He speaks with toxicologist Kevin Shanks, Dennis Cauchon of Harm Reduction Ohio and fentanyl test strip guru Tino Fuentes.

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Photo credit: Christopher Moraff, edit by Troy Farah.