At the moment, I'd increase antioxidant consumption, including vitamin C, E and selenium. more on that if requested.
The mice in the Gregus study that received ALA excreted more Hg than control mice but also ended up with *more* Hg in the brain and organs. Andrew Cutler, PhD chemistry, comments here. http://onibasu.com/archives/am/74605.html
Obviously most people don't have a terrible reaction to taking ALA, especially not in the short term. However in the heavy metal detox groups there are lots of people who are sensitive to it. The theory is that since it is a dithiol chelator of mercury and other heavy metals (HMs), it kicks up the HMs as a part of the detox process. Those who are not good excreters of HMs and who have a HM problem are likely to be vulnerable.