McKinsey Issues a Rare Apology for Its Role in OxyContin Sales. Pain-Relieving Drugs, Opioids and Opiates, OxyContin (Drug), Drugs (Pharmaceuticals), Drug Abuse and Traffic, McKinsey & Co, Purdue Pharma, House of Representatives, Senate, Hawley, Josh D (1979- ), Murphy, Philip D (1957- ), Schatz, Brian