I did it recently with my low back issues. I didn't have high expectations with it and just felt like throwing another thing at it along with chiro and physical therapy. I did sub q lower back near my L5 rotating each side every day. Just went through one vial. My L5 is partially fused to S1 so obviously this didn't fix it. I do feel much better a month later probably mostly due to the physical therapy and taking a break from loading my spine heavily.
It is pretty inexpensive so it wouldn't hurt to see if it will help you.