I think it is important to take note however that as per the FDA (I have a copy of the letter) there are NO reported cases of toxicity as a result of taking low ppm Electro Colloidal Silver . There are a couple of cases of agyria as a result of ingesting silver salts and or silver nitrate (the dark yellow to brown stuff that is cooked way too long or made with tap water and salt). It would be difficult to reach a toxicity level taking properly made, clear, 10ppm electro Colloidal Silver . If you understand this differently then clue me in.