I bought my DE from http://www.earthworkshealth.com
in the 50# bag. I have primarily used it to kill bugs and spiders in and outside of my home; on my pets (fleas, and ticks); on my pets' food for parasites, and occasionally I put it in juice for me.
I can't say 'proof positive' that it has helped with bowel movements for me, or not or was it just hit or miss, and luck of the draw - who knows? LOL
I can say that it keeps the bugs/spiders down TREMENDOUSLY in/out of the house along with in the garden and lawn.
It DOES my my hair grow like CRAZY along with my NAILS.
It seems to affect (lower) blood pressure.
It looks and tastes like FLOUR. Yuck. But stir quickly in juice and drink fast so it doesn't clump and go to the bottom of the glass.