I have read that PWMS are low on magnesium and most need to supplement. My neruo agrees, she said it's like being low on B-12. When you need it, you know it.

I take a lot, 3 tablets of 250 mgs of Magnesium Oxide, and there is other 400 mgs in my Calcium, Magnesium, Zinc tablet, which I take two of, so that's a total of 1550 mgs a day and have no problem with it. If I don't take this amount I get constipated and muscle cramps of the leg calves, toes, arch and spasms of some odd muscles.

My Gastro doc said this was a lot, but he looked on his computer and then said if it doesn't give you diarrhea, then it is fine with him.

If I do get any looseness, I cut back the next day. If I don't take it at times I get blockage of solid, yet water comes thru so you think you have diarrhea but you don't. The fluid is just going around and out passed a solid that got too large to exit or from lack of motility. This was discussed with my Gastro doc, after my recent colonoscopy.

Muscle cramps and spasms are indeed helped by magnesium, you just have to find the right dosage that works for you. Magnesium citrate was too harsh on my stomach. It seemed too acidity or something, for me. It may be fine for others, we all have our own little problems with foods or vitamins in certain forms. JMO