Later it became the illegal substance it is today.
I imagine patients seemed perfectly normal at the time it was released, otherwise it would never have been released for widespread medical use.
But, like fentanyl, a subset of the population exhibits the extreme behaviors that become stereotypical.
Some fraction of the population has chronic pain and uses this to manage and some other fraction uses it for the euphoric feeling.
Later it became the illegal substance it is today.
I imagine patients seemed perfectly normal at the time it was released, otherwise it would never have been released for widespread medical use.
But, like fentanyl, a subset of the population exhibits the extreme behaviors that become stereotypical.