Terramin clay question

Is anyone here familiar with internally used terramin clay? I used to use Bentonite and psyllium as part of my Bowel Cleanse ritual, but read somewhere about terramin clay that apparently NASA was using to help astronouts with the bone loss problem.
I was all set to order this product because of all the various minerals it contains, when I read in a study done on terramin that it also contains aluminum hydroxide. This put a real damper on my enthusiasm for this product.
Does anyone on this forum have more info on this product?
Would really appreciate your input!