Had a discussion about this with my wife. She's a pharmacist and involved with a bunch of case studies and discussion groups on these types of things. A few years back there was a major push in Heroin overdoses. They went back and started looking at the data and they all started spiking when Oxycodone was reformulated for "sustained release". The reformulation was really there so that it couldn't be crushed up and snorted or cooked down for IV use.
They are bracing for another wave of Heroin OD's after this legislature goes through.
Yea, I worked at Colonial Management Group for about 9 months, they treat addicts with methadone, my boss had said the same thing. FL, once one of the easiest states to get Oxycontin, roxycodone, Vicoden finally got a computer database installed and started shutting down the "pill mills", this led to a huge rise in heroin usage as the pills were either unobtainable or so expensive heroin was cheaper to use. As for CMG I don't think they tried very hard (or at all) to get people weaned off the methadone, it's a huge profit machine, they pay $25/liter for it and sell individual doses @15.50, anywhere from 5mg to 350mg depending on the persons tolerance.