I was taking mestinon five times a day. At thanksgiving time I was in the hospital for ptosis. They thought maybe I was having atypical migraines. They gave me 3 iv piggybacks of magnesium and then sent me home with a magnesium prescription. I have been feeling weak ever since I was in the hospital. My doctor increased my mestinon to 6x/day but I was still feeling week. Then last week I was having diarrhea so I decided to skip my magnesium for a couple of days to see if that helped. All of a sudden I had all of my strength back! I am positive it was the magnesium, but when I called my doctor's office they said they didn't think it was related. Has anyone else had trouble with magnesium?