What is fentanyl? The little-known but deadly drug that killed Prince, US news

One of the most dangerous drugs is a synthetic opioid ‘so potent and that even a microgram amount can kill’ – and it’s up to 50 times more powerful than heroin

Police Issue Urgent Warning After 2 Virginia Teens Die of Suspected Fentanyl Overdose – NBC4 Washington

Fentanyl is deadly — but what is it?

Pills seized from Paisley Park contained illicit fentanyl, same drug that killed Prince

The Fatal “Blues” — LEB

Heroin laced with elephant tranquilizers hits the streets

How Fentanyl Is Contaminating America's Cocaine Supply

Painkiller That Killed Prince On The Rise In US, US News

Drug That Killed Prince Is Making Mexican Cartels Richer, U.S. Says - The New York Times

Fentanyl - Wikipedia

Fentanyl: What do we know about deadly synthetic drug that killed Prince and has gripped the US?