Patty - NDF (Natural Detox Factors) and NDF Plus have been scientifically proven to be the most safest and effective heavy metal and chemical chelators in the world.
It contains organic cilantro, micronised chlorella, cell wall lyced probiotics, and a special type of water that helps normalize brain function affected by heavy metals.
I've been using large doses of both products for the past couple of months and have reduced a substantial amount of metals without any side effects because i'm with a good doc who knows how to test to make sure you can handle it, and knows how to support your system at the same time.
It chelates metals via the urine and not the bowels, so less chance of any reabsorption. It also chelates all heavy metals, also chemicals and mycotoxins, which none of the chemical chelators are able to do. Plus it's safe and natural. Any bad stories are from people who treat themselves instead of being guided by a doc who uses it, and will know when to use support remedies such as Liverlife. I continue to use it but using other methods at the moment as it's not just metals with me. Hope that helps.