Oxycontin helps to relieve pain severe enough to require opioid treatment and when other pain medicines do not work well enough or cannot be tolerated. Buy oxycontin online at an affordable price from Newlifemedix. This medication is used to help relieve severe ongoing pain (such as due to cancer). this medication on a regular schedule as directed by your doctor, not as needed for sudden (breakthrough) pain. Oxycontin is still prescribed but sometimes those strengths may cause overdose (even death) if taken by a person who has not been regularly taking opioids.