when i was reading your post, i thought it was written by me!!! My child flipped on magnesium but flips on EVERYTHING we have tried. It turns out that she went crazy on everything because she had severe yeast/fungal issues. She is now on Amphoceterin and doing well and also tolerating more supplements/vitamins. It was a hellish 13 years and now we are finally seeing some results. Also possitve for lyme/bartonella. We treated her with the bactrim and mino. and she was a mess. Again, I think because yeast was out of control. Hope this helps.