[drugpusher]

I would think a key piece of evidence would be the IMS reports which show doctor level prescription data. The companies had to know that there were a lot of outlier doctors prescribing huge amounts of opioids way above the norm. (For those that don't know, you can buy data which shows what individual doctors prescribe. All drug companies buy this to know their market share and plan salesforce activities. You better believe they knew when things were going off the rails.)