Roxycodone whose compound is also known as oxycodone is a narcotic pain killer. It works very effectively at working right where the pain originates as it dulls the very pain perception in the brain. However, if it is taken in very dozes, it may negatively affect other body parts and their functions. This may include the respiratory and the circulatory systems of your body. Roxycodone is used to eliminate moderate and severe pains. It may serve the function of sedating the patient before surgery so it reduces the fear and the nervousness that he may suffer from pre-surgery. However, this drug is not to be taken after the surgery, unless you had already been prescribed to it before the surgery. It may serve other purposes for you too as per the directions given by the doctor.