Oxycodone 20 mg is a semi-synthetic opioid derived from thebaine, which is an alkaloid extracted from the opium poppy. It was first introduced in the early 20th century and has since become one of the most commonly prescribed opioids in the United States and around the world. Oxycodone is available in several formulations, including immediate-release and extended-release tablets, as well as in combination with other medications such as acetaminophen or ibuprofen.