Hi, I don't think I can improve on Russ' link there, but I can say this much. Vitamins and minerals are usually fine, but sulfur amino acids like cysteine, methionine, and garlic etc, chlorella, lipoic acid, msm, are not. They have an affinity for mercury and will mobilise it and possibly move it into more sensitive areas.

Basic vitamins and minerals are ok, as they are not direct chelators.