Yep -- OxyContin has a timed-release coating and by preventing the "peaks and valleys" of opiate use, it was supposed to minimize addiction. This was a major selling point for doctors, which turned out be based on falsified data.

The thing is, I don't think any studies have actually validated that concept? If you say "it's basically known", I'm curious what evidence you have for that statement. Are there studies where people have been prescribed more opioids but been less addicted because they finally have "sufficient" medication?