Oxycodone is a medicine used to treat severe pain. It's only available with a prescription. Oxycodone is a type of medicine called an opioid. It's used to treat pain, for example after an operation or a serious injury, or pain from cancer. Oxycodone is a strong opioid pain medicine used to manage pain that is severe enough to need an opioid, and only when other pain treatments, such as non-opioid medicines or other combinations, have not worked well enough, are not tolerated, or are not expected to control the pain. Why is this medication prescribed? Oxycodone is used to relieve severe pain. Oxycodone is in a class of medications called opiate (narcotic) analgesics. It works by changing the way the brain and nervous system respond to pain. Oxycodone is a prescription opioid medicine used to manage pain severe enough to require an opioid when other pain treatments do not work well enough or cannot be tolerated. Some forms are used for around-the-clock, long-term pain treatment, while others are used as needed for pain relief. Oxycodone is used to relieve pain severe enough to require opioid treatment and when other pain medicines did not work well enough or cannot be tolerated. It belongs to the group of medicines called opioid analgesics (pain medicines). Oxycodone is an opioid medication that takes on pain. It comes in tablet, capsule, or liquid form. Understand the uses, side effects, and precautions. Oxycodone, sold under the brand names Roxicodone and OxyContin (which is the extended-release form) among others, is a semi-synthetic opioid used medically for the treatment of moderate to severe pain. Oxycodone is a medicine that is used to help treat severe pain. Common side effects include constipation, nausea, vomiting, stomach pain, headache, and dizziness. Do not drive or do other. Oxycodone is an opioid medication that treats severe pain. It works by blocking pain signals in your brain. Detailed Oxycodone dosage information for adults and children. Includes dosages for Pain and Chronic Pain; plus renal, liver and dialysis adjustments.