Painkiller Makes It Big on Black Market. The DOJ is becoming concerned about the extent of diversion of Oxycontin (the time-release version of the narcotic analgesic oxycodone) into the street trade. The appeal of this drug is familiar to me from seeing the high proportion of drug-abusing patients admitted to my psychiatric hospital who have found a way to arrange to have this drug prescribed for them legitimately, far out of proportion to their pain-control requirements.