What is the dosage of Mg in this product? I've been taking 200mg of Magnesium Asporotate twice a day with my 600mg of Calcium (twice a day) for 5 years now. I've not had the problems you are speaking of. I did try a calcium supplement from the health food store that had Mg. Citrate in it. Now that did cause D, cramping, and a feeling of an incomplete movement. Maybe Mg Asporotate is different. I buy a brand called Solaray. Elaine