OxyContin 80 mg is a high-dose prescription medication containing oxycodone, a potent opioid used to manage severe pain. As an extended-release formulation, it is designed to provide long-lasting relief for patients dealing with chronic pain, such as pain from cancer, back conditions, or major surgeries. The 80 mg dosage is typically prescribed for patients who have developed a tolerance to lower doses of opioids and require stronger pain management.