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

Prince Died From Accidental Overdose of Opioid Painkiller - The New York Times

Deadly blue 'Mexican oxy' pills take toll on US Southwest

Biden Administration Says Fentanyl-Xylazine Mix Is an 'Emerging Threat' – NBC4 Washington

Fentanyl is deadly — but what is it?

What Is Fentanyl and How Is It Getting to the US?

Fentanyl: Drug That Killed Prince, Tom Petty Has Long History of Abuse

How Fentanyl Is Contaminating America's Cocaine Supply

Europe dodges US fentanyl crisis but for how long? –

Fentanyl Drives U.S. Drug Overdose Toll Ever Higher