Courtesy of an e-mail chain of which I’m a member, I came across this picture (clickit to biggit).
On the left is a lethal dose of heroin. On the right is a lethal dose of fentanyl.
The article from which I took that image warns:
Heroin and fentanyl look identical, and with drugs purchased on the street, “you don’t know what you’re taking,” Tim Pifer, the director of the New Hampshire State Police Forensic Laboratory, told STAT in an interview. “You’re injecting yourself with a loaded gun.”
There’s more at the link. Highly recommended reading.
No wonder fatalities from illicit narcotics are increasing by leaps and bounds. When the difference between life and death can hardly be seen with the naked eye, it’s far too easy to make a fatal mistake.