OxyContin is the brand name for the extended-release form of oxycodone, used to manage severe chronic pain. It releases oxycodone slowly over time, providing long-lasting pain relief for patients with conditions like cancer or severe injury. OxyContin is effective but highly addictive, and its misuse has contributed to the opioid epidemic. Side effects include drowsiness, nausea, constipation, and the potential for respiratory depression.