What dosage are you at? Its a tough thing because building up your immune system with mercury poisoning is almost self-defeating. To have a strong immune system you gotta get rid of the mercury altogether, but I'm sure somethings may help, but I wouldn't put off chelation long for it...just try to figure out if any supplements help.

I just upped my DMSA dosage and am doing ALA/DMSA chelation now, and I definitely feel it. I get terribly itchy, everywhere, but other than that it seems to be going well so I'll just deal with the itchiness.