Bests & Worsts Reviews from Amazon

This product has a warning on the the back not shown in the description on Amazon It says WARNING: This product contains a chemical known to the state of California to cause birth defects or other reproductive harm. I looked this up and apparently this seems to have lead in it. Lead is toxic and this is supposed to help remove heavy metals such as lead.. why it would contain lead and why it was not mentioned in the description I do not know But it seems this product review is very biased as well because it looks like a lot of these high ratings were due to people receiving free or discounted product. I also asked the question of why this label is there and what chemical it contains and was never answered.