I found a round red pill that has OP on one side and 60 on the other side, what is this

Not Medical Advice: The pill with the OP 60 imprint is called OxyContin prescribed for the management of moderate to severe pain.

Tags: opoxycodonethe other sidepill 
Thursday, February 02 2012
Source: http://www.rxlist.com/oxycontin-drug.htm