Hi - I agree with Shelley (so what else is new . . .). For years, every time I would go to the dentist for work, even cleaning, I would feel nauseated for hours afterwards. I never understood what it was that did that. I noticed on my last visit, same work done, NO NAUSEA. Looking back, I can only assume that it had been mercury poisoning, and that now, after having been working on my health for quite some time, am now better able to clear it. Liver health rules!