It is better to buy Oxycodone online in the USA if you have cancer pain, ongoing pain, paroxysmal pain, and other discomforts after the operation. It is unclear whether using it for chronic pain improves the quality of life or provides long-term pain relief. Oxycodone is available in the form of a controlled-release tablet that should be taken every 12 hours. A study discovered that the controlled-release preparation had a variable duration of treatment ranging from 10 to 12 hours.