[DemforBush]

The infamous “Tango and Cash” smack that killed a number of junkies in the 1990s was also tainted with fentanyl. Supposedly, some of the users died within seconds of the injection.

Fentanyl, as I understand it (medical types, feel free to correct me here), exerts a powerful suppression effect on the respiratory system, far more so that heroin or other opiods/opiates.

[peeps36]

Fentanyl is the same drug the Russians used on the terrorist in the theater. It's a synthetic drug that can be made strong enough to sedate elephants. I've seen it in the form of lollipops and adhesive patches for pain.

[Kozak]

Fentanyl is synthetic opiate. Very quick acting with a short half life.
A typical dose of IV morphine is 4 to 10 milligrams.
A dose of Fentanyl might be 25 to 75 MICROGRAMS.
There are 1000 micrograms to a milligram.
There’s another drug out there. Sufentanyl that’s 100 times stronger then Fentanyl.....

[SargeK]

Therapeutic doses are measured in micrograms. That’s why medical preparations are solutions. You can’t ‘step’ on fentanyl enough in granular (powder) form to be safe.