OxyContin is a prescription pain medication. Below is a clear, high-level overview focused on medical understanding and safety. What Is OxyContin? OxyContin is the brand name for extended-release oxycodone, a strong opioid (narcotic) pain reliever. It is designed to release medication slowly over time to provide long-lasting pain control. What Is It Used For? OxyContin is prescribed to treat severe, long-term pain when: Pain requires around-the-clock treatment Other pain medicines are not effective The patient is under close medical supervision It is not meant for short-term pain or “as-needed” use.