Oxycodone 5 mg is used for the treatment of moderate to severe pain. Oxycodone is an opioid medication. This is the lowest dose. The highest dose is Oxycodone 80 mg. A person having asthma, breathing issues, or blockage in the intestine or stomach should not use this medicine. Take this medicine the exact way you are directed to use it. There are some side effects of taking this medicine.