 Calcium magnesium is excellent for back pain because the calcium goes into the muscles. The magnesium actually helps the transmitters in the nerve. And when you take this Calmax formula, many times it will calm your back pain. Wow. I know a couple years ago I herniated a disc in my back. And I was trying everything and I took out the Calmax formula and I drank it and I couldn't believe the difference. Within about a half hour, I was functional again.