Oxycodone 20 mg is a prescription opioid analgesic used for the management of moderate to severe pain when around-the-clock pain relief is needed. It acts on the central nervous system to change how the body perceives pain. This medication is typically prescribed for patients who require long-term opioid treatment and have not responded adequately to other pain medications. Due to its potency and risk of addiction, Oxycodone should be used strictly under medical supervision.