The amount of each drug that is enough to kill an adult human.
THIS. DAMN.
I had Fentanyl patches when I tore my rotator cuff. Really didnβt like them, preferred the OXY.
Stopped doing the patches and actually went through withdrawal, which took me by surprise. Went to using OXY and stopped those cold as well, without anything even close to withdrawal. That Fentanyl shit is nothing but bad news.