I use this product for a natural laxative. I cannot speak to the magnesium effects as I noticed nothing. This product is the only one that produces a natural laxative effect that I feel safe taking daily. My problem with the product is the erratic consistency. One bottle will be thick as a dairy queen and light orange color, the next will be like brown tobacco juice. Both seem to have a similar effect, the brown with orange tints does not taste as good.