BUY Oxycodone Online and enjoy the convenience of paying with a variety of easy payment options for a secure and seamless transaction. Oxycodone is an opioid narcotic pain-reliever used to treat moderate-to-severe pain and is often prescribed after surgery to help provide relief in chronic pain conditions. Oxycodone works by binding to certain receptors (opioid receptors) in the brain and spinal cord, changing the way the body perceives pain. It is available in numerous formulations: immediate release and extended release.