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

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

Hearing on Combating the Fentanyl Crisis

Prince's Counterfeit Pain Pills Likely Came to Him Illegally

Fentanyl-spiked pills killed these Kansas City area teens

Is Kratom a Deadly Drug or a Life-Saving Medicine? - Bloomberg

Drugs found under trapdoor at nursery where child died of fentanyl exposure

Could drug checking have prevented Prince's overdose death?

Fentanyl: The dangers of this potent “man-made” opioid - Harvard Health

Fentanyl overdose deaths spike across the country, a trend driven by secret labs and fake pharmacies - Voices For Awareness

Prince death: Opioid painkillers found at singer's home - BBC News

Drug overdoses killed more Americans last year than the Vietnam War - CBS News

Polysubstance Drug Abuse Complicates Opioid Addiction Policies

The Fatal “Blues” — LEB