Much depends on the cause of the back pain. If not purely muscular, x-ray is a first step to determine the possible location and cause. Serious problems cannot be treated by acupuncture, chiropractics or health store nostrums.
My wife has osteoporosis. Vertebroplasty (injection of a "glue" into the vertebrae) was the solution used to repair two of her vertebrae. Bone loss and fracturing of vertebrae needs serious medical help.
Acupuncture was of no benefit whatsoever. She becomes nauseous with most pain-killers, but after trying many, with the assistance of her doctor, located one that helps.
I have bone loss as well, but mostly it is kept under control by gentle exercise, massage, and use of Celebrex when needed. I also take glucosamines, calcium-magnesium with vitamins and Fosamax. These stabilize the damage, and bone-density measurements show slow improvement over the past three years.
Chiropracters are OK for some massage type treatments, but their training is sheer quackery and they can damage patients through their ignorance. A couple of deaths here recently (Canada) from improper treatment.
A sports-trained massage expert is far superior.