I've been using Sonne brand clay (which is in solution) for some time now. I take it nightly and when I miss my Algin dose or otherwise violate dietary restrictions that promote greater mercury mobility.

In my case, it appears that my liver is capable of clearing mercury, but that I can easily reabsorb it--hence the use of Algin and clay.

It is highly unlikely that simply drinking the clay solution will promote constipation. I've found that psyllium can very easily cause constipation in me depending on how much liquid I consume during the day or if something else slows down the transit speed.

Nina: I too experienced the nightmares. In my case it was a combination of too much glutamate/aspartate and low anti-oxidant status. I was helped immensely by reducing exposure to processed and restaurant foods and animal protein. Following removal of amalgams, I've only had a handful of horrible nightmares. The validity of the glutamate/aspartate hypothesis in you would be supported by experiencing cold hands/feet and insomnia on days with high glutamate/aspartate exposure.