Percocet is the brand name for a painkiller that combines oxycodone and acetaminophen therefore oxycodone is a powerful opioid and is derived from the same sources as morphine and some illegal drugs, including heroin. Buy Percocet online which is a less potent pain reliever that increases the effects of oxycodone and it is used to relieve moderate to severe pain and it can only be used under a doctor’s close supervision.