Purdue is a clinical pharma company. They do extensive testing on their molecular candidates both in-vitro and in-vivo. There is no way they would not have know

Purdue is a clinical pharma company. They do extensive testing on their molecular candidates both in-vitro and in-vivo. There is no way they would not have known that OxyContin was more addictive. If memory serves me right there was a whistleblower who claimed that Purdue knew and hid the fact from regulators but I might be mistaken.