Percodan is a pain reliever used to relieve moderate to severe pain. It contains a combination of aspirin and oxycodone. Aspirin is in the group of drugs called salicylates that work by reducing substances in the body that causes fever, pain, and inflammation. Oxycodone is in the group of drugs called narcotic pain relievers and are highly addictive if misused. Because percodan is a stronger pain reliever, it is not recommended for...