kiwi, yes the mercury and other chemical irritants that you are in contact with are most likely the underlying cause. The result is that yu have become sensitive to multiple other items including supplements, a biproduct from the resulting candida.

Based on the symptoms you described there is a high probability ileocecal valve dysfunction is the underlying cause of the symptoms you described. I'd recommend buying that book in the link which only costs a few bucks and start getting healthy.

I suffered from exactl;y what you described and ingested enough vitamins and supplements to fill up a health store. When I was finally diagnosed with ileocecal valve dysfunction my life changed.

We all want the magic pill or potion to make us well but it rarely works that way and in most cases the solution is a lot simpler than we realize.