Oxycodone belongs to a class of drugs known as opioid analgesics. This medication works in the brain to change how your body feels & responds to pain. Oxycodone is widely available in tablet, capsule, & oral solution formulations. It may cause life-threatening breathing problems during the first 24 to 72 hours of your treatment & any time your dose is increased. you can take this drug with or without food. Shallow this medication whole with plenty of water by mouth as directed by your doctor.