Hi Bex.
Yes I have done two rounds of ALA chelation, it left me in a state where I can do nothing more, cleared up most of the brain fog and now I have to wait for the adrenals/thyroid to catch up. I still keep salivating excessively, its nothing different from the stuff that started coming out a year ago after I removed my filling. I never had any excess salivation before I got my filling out, my body was completely dead in this respect. Of course, things have much improved since then, but there is still some work to be done. The saliva stuff is really acidic, if I keep it a longer time in mouth, it will start to slightly burn the tongue, or I get a slightly sore tongue from continuous exposure. I believe it's a product of the immune system that unleashes acid on the candida.
I have not tried DMSA, garlic gave me some time ago a rather explosive feeling, bad diarrhoea, and burning sensation under skin. And that was just a single clove of raw garlic.