Thanks to both of you for your responses. Sulfur doesn't seem to be a problem for me, I can eat lots of foods with sulphur in them. I do know that a few months ago, when I tried taking ALA on its own, I felt horrendous and had to reintroduce DMSA with it. And I seem to be getting redistribution symptoms this morning after having finished my round last night. So no, it doesn't seem logical that mercury could still be causing problems for me, but if I'm reacting to chelators then I think I need to continue with those. In answer to your question Bex, symptoms have been steady even when I had my amalgams replaced with composite, so I don't think the new material is a problem.

At least today the sugar cravings and anxiety have died down, and I'm not as fatigued. The experience of the past 3 days rather puts me off starting another round in a few days but hopefully the next one won't be so bad.

What bothers me is that neither of these substances, DMSA or ALA, is well understood, and there have been very few studies done with them. In fact, no one understands how any substance fully reacts with all systems in the body, our knowledge is not that advanced. I guess I have to hope that the reactions I'm getting are positive and they're taking me in the right direction.