I do chelation with DMPS and DMSA tablets. There is very good literature out there in German by Prof. Daunderer in case you read German.
I have no problem with the treatment. I am sure you know that you have to stop taking supplements 2 days before until two days after the treatment. I do not get remineralisation IVs after the treament because they are to expensive, instead I eat really nourishing things and take zinc supplements because the zinc is chealated too. I have been doing this for over a year now every month. DMSA gets the mercury out of the brain and the kidneys it is also much cheaper than DMPS. EDTA is useless with mercury it does not chelate it at all.
You can take chlorella capsules during the chelation. It absorbs mercury from the intestines and si it won;t go back into the bloodstream. When I do enemas during the time I chelate, I feel much better after the treatment.