Many of the pathogens will thrive in a high mercury environment.
I am not sure why your doctor thinks that this level of mercury is safe, that is bizarre.
The Chelorex product is basically a multi mineral product with some precursors to glutathione production and a couple of chelators like chlorella.
There are multiple ways to detox mercury, chlorella is a very good product and glutathione will help push out the mercury and other toxins and other heavy metals.
I never had much success with using the precursors but did get noticable results with a liposomal glutthione called Readisorb. You have to start slow with this product.
ACZ nano is an affordable zeolite which you can read about at naturopath4you.com, he has other products listed that might be helpful to you.