i take about 350mg of magnesium a day, for cardio support, and i can't say i notice much on the sleep front, but when my wife takes it, it literally acts like a sleep supplement, same with her dad. if she's stressed, she takes it and it helps her relax and sleep better.

i've recently been taking Magnesium glycinate too, just because I heard it gives you crazy af dreams and , so far, i have been having some pretty crazy ones , general sleep quality is the same, as far as i can tell