Percodan® is the brand name for the combination of acetylsalicylic acid (aspirin) and oxycodone. Percodan® is prescribed for moderate to moderately severe pain. Oxycodone binds to the pain receptors in the brain so that the sensation of pain is reduced. Acetylsalicylic acid halts the production of prostaglandins which otherwise cause pain. It is available in tablet, capsule, and liquid form and is taken every 6 hours by mouth. Since oxycodone can be habit forming, care must be taken to follow the doctor's instructions when taking Percodan. Do not take a larger dose, or take it more frequently, or take it for longer than the doctor has prescribed.