I wonder if the smart people on here can help me understand a reaction I had to a magnesium supplement that I recently tried. Typically, I take ZMA before bed and it really helps knock me out (I sometimes add melatonin, agmatine and/or an herbal tea). However, recently I decided to try a slow release magnesium malate (500 mg of magnesium). Unfortunately, every night that I tried it, I had trouble sleeping. I'd wake up after about three or four hours of sleep and be wide awake/alert. Has anyone else experienced this or know why I could be having this reaction to the magnesium malate? I'm curious if it has something to do with the malic acid it's bonded to or somehow related to the slow release mechanism? Any thoughts/information would be appreciated.