Oxycodone
Other forms of oxycodone have a special coating that makes just a little bit of the medicine get released into the body at a time.  A small amount of oxycodone is released, non-stop, into the body for up to 12 hours.  The goal is to have the same amount of painkiller in the body all the time.  These are called long-acting, extended-release, or controlled-release forms of oxycodone.  They do not start working quickly, but they last a long time.  The most common brand name for controlled-release oxycodone is OxyContin.