Summary: The prescription pain relievers you once used after an injury or surgery seem to no longer be helping with the pain. After extended use, drugs like morphine or oxycodone may not provide the same pain relief they once did. <a href="http://medicine.utah.edu/faculty/mddetail.php?facultyID=u0031449">Dr. Kirtly Jones</a> talks about narcotics, how your body responds to them and why these pain relievers can sometimes actually cause you to feel more pain.
