Doubt it would do much for mercury, although it might be helpful in other respects.
For mercury removal, you should look into chelation. I use the Cutler protocol, although there are other approaches that you might want to try. The important thing is to stay away from EDTA and DMPS injections.
Looking for opportunities to sweat, whether that be via hot bath, sauna, some exercise, sunbathing, and so forth, can also be extremely helpful.