What is Oxycodone? It belongs to the drug class narcotic analgesic and is a generic form. Therefore, it is sold under the brand name Oxycontin, Oxycontin CR, Roxicodone, Oxycodone, and Percocet. His is a pain-relieving medication and works well on people after a prescription by the doctor. Moreover, you can also buy Oxycodone online. It helps treat moderate, acute, moderate to severe, and severe body pain.