I also saw your question in the More/Less forum and his more or less non-answer. You mentioned Chronic Fatique and joint issues. I was told to take Magnesium Malate for Chronic-Fatigue-Syndrome and Fibromyalgia like pain. There is supposed to be something about the combination of Magnesium and Malic Acid that makes this formula work on joint and muscle pain better than other formulas. I have not experienced any miracles, but it does seem to help when I take it on a regular basis. The brand I bought is by Nature's Life. I also have a liquid cap of Magnesium Oxide and Calcium Carbonate I got from Swanson Vitamins.