Tried Iodine at 12mg a day earlier this year before finding out about the mercury. It did give me quite a bit of energy but DEFINITELY stired up the mercury after a few days on it.
As for the DMSA. I was under the belief that DMSA is for pulling mercury from the body? How would over chelating (which i don't plan on doing) concentrate mercury in the brain is DMSA does not cross the BBB?