I had all my Amalgams replaced. I didn't notice them taking any extreme precautions and it turned out ok. My biggest problem was the bottom molars had to be capped and one of them kept popping off. Seems to be ok now. fortunately I don't notice any damage done from mercury exposure.
If I were to do it again I would get this product and begin taking it a couple days before removing the fillings. I have used the product since but a few years after the dental procedure. It's a simple product to use.
I had to pay for most of my Amalgam removal also. In America the insurance won't pay unless it's an excepted procedure. And usually these excepted procedures have been lobbied into place to destroy your health or maims you. If the procedure improves your appearance or health they are dead set against it.
I went back to visit my extended family in another state and found mercury still being put in the mouths of the next generation much to my disgust.