Hi Chad;
I would get another naturopath; any "natural" doctor that would even suggest doing a challenge test when you still have mercury in your mouth is a sadist! After researching all this stuff on the net, then having my metalic fillings removed by a "holistic" dentist, I used plenty of magesium capsules to get my bowels fairly loose during this process, as when you have your teeth redone, the liberated mercury can then be inhaled or reabsorbed through your mouth wall, so if you are "loose" re bowels, it will get excreted rapidly that way with minimal problems. All the people stating they had terrible problems when getting their teeth done either were constipated or not taking enough magnesium or other "bowel mover".