Oxycodone, sold under the brand name OxyContin (which is the extended release form) among others, is an opioid medication used for treatment of moderate to severe pain, and a common drug of abuse. It is usually taken by mouth, and is available in immediate-release and controlled-release formulations. Onset of pain relief typically begins within fifteen minutes and lasts for up to six hours with the immediate-release formulation. In the United Kingdom, it is available by injection. Combination products are also available with paracetamol (acetaminophen), ibuprofen, naloxone, and aspirin.