Buy Oxycodone 80mg Online no rx in usa with no extra charges @Careskit.com. Oxycodone is a semisynthetic opioid synthesized from thebaine, an opioid alkaloid found in the Persian poppy, and one of the many alkaloids found in the opium poppy. It is a moderately potent opioid pain medication (orally roughly 1.5 times more potent than morphine), generally indicated for relief of moderate to severe pain. Oxycodone was developed in 1917 in Germany as one of several semi-synthetic opioids in an attempt to improve on the existing opioids.