Hi, I am new to this site. Lots of great information!! Just wondering, I've been taking magnesium for about 3 weeks. You say that it has to be taken for several weeks or months before you see a difference? My afib flutters also occur at night and I am amazed at the variety of triggers that people have listed! My triggers seem to end when I sit up or sometimes change position in bed. I am taking 700mg of magnesium per day. Thanks