In a message dated 7/4/99 4:09:39 PM Mountain Daylight Time, [log in to unmask] writes: << Magnesium's value in cramping is that it relaxes muscle tissue. >> Marilyn.... Thank you so much for taking the time to write about my problem. At this time the right calf is relaxed, but it did take a LONG time. I have Magnesium on my list for Tuesday at GNC where I shop for my supplements. Thanks again for helping me. Clare