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

Fentanyl is a powerful synthetic opioid. It is far more potent — and potentially more dangerous — than heroin and morphine. Overdose deaths related to fentanyl are on the rise. The drug is cheaper than heroin and recently is being used to dilute heroin or substitute for it. Users may be unaware

Fentanyl addiction, homelessness haunt this New Mexico town - Los Angeles Times

Tramadol: The Opioid Crisis for the Rest of the World - WSJ

Opioid Addiction: A Glossary of Common Terms, Opioid Crisis, Seven Days

Doctors, Dentists Still Flooding U.S. With Opioid Prescriptions : NPR

Chromogenic and Fluorogenic Probes for the Detection of Illicit Drugs - Garrido - 2018 - ChemistryOpen - Wiley Online Library

Withheld: As fentanyl floods in, can death data keep up? - WyoFile

Fentanyl Overdose Signs/Uses/Danger/Treat

Israel's Opioid Crisis Could Become Worst in the World - Israel News

Tramadol: The Opioid Crisis for the Rest of the World - WSJ

Opioid - Wikipedia

Fentanyl vs. Heroin: An Opioid Comparison

Fentanyl Education Sold Out Youth Foundation

Is Target-Based Drug Discovery Efficient? Discovery and “Off-Target” Mechanisms of All Drugs

The Surge of Methamphetamine: Understanding the Effects of Use and Treatment Options