I watched my brother go from not being able to function very well, to moving like he was 20 again. He had several coworkers that have had the shot So he gave it a try. I could not find much out about this shot, I have searched for anything I could find. I have not seen anything that has scared me away from giving it a try. I watched him for a few months and decided I was going to give it a try because it had worked on all of them. For two years I had been to doctors, pain management, chiropractors, physical therapy and massage therapist. I had been in chronic pain, I could not raise my right leg, a constant pain in my thigh, I was having hip pain and lower back pain. Nothing was helping. It's been over a month and a half since I had my shot and I have been pain-free ever since. It's the best $300 I've ever spent. I did not see Dr Mike, I saw Dr Rick, super nice guy.