Hi kstyle, thanks for your quick reply! I have been taking magnesium tablets. I was taking four daily, but then my consultant told me not to take so many as magnesium going into the stomach causes the output to be higher. So, I cut them to two daily, but it's not making any difference! I also use magnesium flakes in a foot bath nightly as this is supposed to be better going in through the skin (transdermal) than into the stomach. For all I know, it might be making a difference. Maybe my magnesium levels would drop even quicker if I wasn't trying these things! I had a terrible day yesterday, as you say, muscle cramps, terrible exhaustion, and I also get heart palpitations. When I get them, I know I'm on the slippery slope! At the moment, I'm getting two weeks out of every infusion. The days at the hospital are so long. I'm there at 9am, and most times I'm not leaving till 11pm! Starting to pull me down mentally again. I'm 71 and getting on. The ileostomy I can cope with, but not the constant deficiency!  What a moan I am, lol! nbspThanks for your kind reply. Good to know I'm not the only one on the planet with these problems! I'm in Scotland, but one of my favorite places is New York. Love it!