I've had in the past severe lower back pain caused by a slightly bulging disc in the S5 and L1 area of my back. When it got really bad my pain management specialist would give me a Methylprednisone pack for a 6 day period. This would help immensely. Then we would follow it up with a round of surgical injections every 3 weeks. The pain would dissipate. However now after doing this for several years I now have osteoporosis. I have back pain and I can no longer take this pack because of so much harm it can do to the bones. I think if one chooses this path, remember that you should not do it very often. It is less destructive but more expensive to get a surgical epidural.