all of your posts speak of DNR and you emailed me in detail about it with all the first names of the people who made the product. i have known about NDF (not DNR) for a long time and have told patients. they make the same claims that you can take it even if you have mercury fillings. but, i don't recommend any chelation prior to removal, no matter what the company claims. it is treating the symptoms and not the cause and i am not confident people would not get ill of they still had toxins in their mouths. i searched the internet for info on DNR products and found nothing.