Yes - US prisons do seem to be overly keen on giving inmates drugs that otherwise would have no value... quetiapine being the most popular I hear. I was prescribed 400mg/day and quit the moment I woke up. I fell asleep on an all-night but from 11PM until 4PM the next day not knowing WHERE I was.
But now people know if it's uses, it DOES have limited street value and I've even heard of people mixing it with cocaine and injecting it. The mixture being known as a 'Q-ball' or a 'slowball'. I can kind of see what it will do, but injecting is bad, injecting pills is even worse.
It turns out in animal models, quetiapine MAY produce addictive usage:
Quetiapine, an atypical antipsychotic, is effective in the management of schizophrenia, depression, and anxiety. Although quetiapine overdosage and misuse have been reported, its abuse potential has not been investigated in animals. In this study, the abuse potential of quetiapine was assessed...
www.mdpi.com
I have more and better reference, I only use this 1 to back up 1 statement.