Percocet is a trade name of Endo Pharmaceuticals for a narcotic pain killer containing oxycodone and acetaminophen. It is used to treat moderately severe to severe acute (short-term) pain. The main ingredients of Percocet are oxycodone, and acetaminophen. Oxycodone is an opioid analgesic medication synthesized from opium-derived thebaine. 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. Currently it is best known as the main active ingredient in a number of oral medications commonly prescribed for the relief of moderate to severe pain. Oxycodone can be combined with inert binders (e.g., OxyContin); with paracetamol, also known as acetaminophen (e.g., Percocet, Endocet, Tylox, and Roxicet); with aspirin (e.g., Percodan, Endodan, Roxiprin); and with ibuprofen (Combunox). Of the oral medications containing oxycodone, OxyContin is notable for its sales; for controversies concerning its patent status and marketing; and for its potentials for hazardous use, harmful use, dependence, and diversion.