The plea agreement comes two days after the Stamford, Conn.-based company agreed to pay $19.5 million to 26 states and the District of Columbia to settle complaints that it encouraged physicians to overprescribe OxyContin.
"With its OxyContin, Purdue unleashed a highly abusable, addictive, and potentially dangerous drug on an unsuspecting and unknowing public," Brownlee said. "For these misrepresentations and crimes, Purdue and its executives have been brought to justice."
Purdue learned from focus groups with physicians in 1995 that doctors were worried about the abuse potential of OxyContin. The company then gave false information to its sales representatives that the drug had less potential for addiction and abuse than other painkillers, the U.S. attorney said.
Privately held Purdue Pharma said it accepted responsibility for its employees' actions.
"During the past six years, we have implemented changes to our internal training, compliance and monitoring systems that seek to assure that similar events do not occur again," the company said in a news release.
OxyContin, a trade name for oxycodone, is a time-release painkiller that can be highly addictive. Designed to be swallowed whole and digested over 12 hours, the pills can produce a heroin-like high if crushed and then swallowed, snorted or injected.
From 1996 to 2001, the number of oxycodone-related deaths nationwide increased 400% while the annual number of OxyContin prescriptions increased nearly 20-fold, according to a report by the U.S. Drug Enforcement Administration. In 2002, the DEA said the drug caused 146 deaths and contributed to another 318.
In western Virginia, 228 people died from overdoses of oxycodone from 1996 to 2005, Brownlee said.
Brownlee said the guilty pleas were entered this morning in U.S. District Court in Abingdon, about 135 miles south of Roanoke. Besides Purdue's plea, company chief executive officer Michael Friedman, general counsel Howard Udell and chief medical officer Paul Goldenheim each pleaded guilty to misdemeanor counts of misbranding the drug.
The fines will be distributed to state and federal law enforcement agencies, the federal government, federal and state Medicaid programs, a Virginia prescription monitoring program and individuals who had sued the company. At least $5 million will go toward a six-year company program to monitor compliance with the agreement.