You can also get a boost of magnesium using magnesium dead sea mag flakes. They are are a bit pricey but i think they do wonders, especially if you wake in the night with leg cramps, restless leg, or cramps anywhere. The most effecient way to use them is mixed with water and sprayed on your legs, let dry (they may itch), and then wipe them off about 20 minutes later. The brand i buy comes w/a spray bottle. I have some cramps that are so severe they are really Tetany, ie your hand for instance cramps up so hard that you can pull your fingers apart, etc. and they pop right back. Very painful. Like most of you people i have a extrememly long list of problems i have been dealing w/for 30-35 years. My newest rhuemy seems quite good, plus my pcp is awesome. The rheumy has thrown in Sjogrens now with my Mixed Connective Tissue disease, have been on prednisone off/on for many years. Starting on Methotrxate in mid Jan. Sorry, back to the mag-i take 500mg of magnesium glycinate daily, this seems to work better than alot of other forms of mag. I AM a 68 yr old woman so can't tell you exactly what YOU need, you must consider your age, wieght and other factors. For me, i've spent thousands of $ on supplements, and it takes quite awhile for some to give you full benefit. Good luck and Happy Holidays and everyday!