SAN FRANCISCO--(BUSINESS WIRE)--McKesson Corporation (NYSE:MCK) today announced that it has reached administrative and civil settlements with the U.S. Drug Enforcement Administration (DEA) and six U.S. Attorneys’ Offices regarding the company’s distribution of so-called “lifestyle drugs.” These drugs, especially hydrocodone and alprazolam, have come under increased DEA scrutiny in recent months because of their potential for abuse.