I had massive success with herbal supplements healing my herniated disc.
I had a very bad herniation - went very close to getting surgery on two occasions. The first was after initial onset as the symptoms were so bad my doctors initially recommended immediate surgery however I chose to wait a week or two to see if it improved.
I saw some initial improvement which meant I decided to try the natural healing route. After 8 weeks of intensive physio, Chiro, Massage and also epidural injection I pretty much hadn't progressed much past were I was at week 2. My pain was now manageable when I was resting but I had seen minimal improvements. I was still slumped like a 90 year old man. Unable to stand or walk for more then a minute or two. At this point I had decided surgery might be the only option.
I had been extra careful with diet to try and maximize my healing and added a few supplements in. Without really expecting any results from these. However when I added Licorice root it was literally like some shot me with a healing gun. Literally the first day I had them .... I just felt different. I had a huge return of energy. Back pain felt better. Within a couple of weeks I had made massive strides to the point my therapists and doctors were scratching their heads as to how it suddenly just magically got better.
I told them I started taking licorice root and they literally laughed at me.
Back pain is caused by mechanical issues with posture - but from what I have read the adrenal glands have a huge effect on the core and back muscles that stabilize the spine. An issue with adrenals seemed to result in mechanical issues with posture and the everyday functioning of these keys muscles. For me these issues seemed to be immediately rectified by simply taking this supplement.
I wouldn't guarantee it will work for everyone. Its possible your mechanical issue is not just related to adrenals but for me that seemed to be the source of the issue. It was like a magic potion.