Oxycodone to treat moderate-severe pain. This medication is classified as an opioid analgesic and works by changing the way my brain and nervous system react to pain. To ensure the safe and effective use of Oxycodone, it is important to consult with a healthcare professional beforehand. It comes in 5mg, 10mg, 15mg, 20mg, 30mg, 40mg, 60mg, and 80mg.