Treatment for a protruding disc at lumbar 5?

Several options. Treatments include non steroidal anti-inflammatory medications, physical therapy, chiropractic care, epidural steroid injections and avoiding strenuous activities. If conservative measures fail, surgery. Check out spine-health.Com.
Physical therapy. Try conservative treatments first, Motrin advil, (ibuprofen) aspirin, physical therapy etc...See your orthopaedic spinal specialist.