Buy Oxycodone 20 mg Online, Oxycodone is an opioid analgesic medication for the treatment of moderate to severe pain.This medication is synthesized from the baine. It was developed in 1916 in Germany, as one of several new semi-synthetic opioids with several benefits over the older traditional opiates and opioids; morphine, diacetylmorphine(heroin) and codeine.