I take it and find it very helpful. I have tried not taking it and have just terrible problems, especially my legs.
It works amazingly for me when I have spasms in my legs. As long as I take it at regular intervals I don't hurt. I also take gabapentin for pain and Horizant for the fibromyalgia.
Did not work!
I have it and have been skeptical about it, I wake up in so much pain that I would try anything right about now.