there are really a lot of pseudo-information in the net. one has to be very sensible and careful which to believe. no offense meant, but i'm also not sure whether that information you just provided is 100% true. when i bought my sovereign silver at whole foods supermarket, there is a warning there regarding argyria from fda or epa. i'm not here to cause confusion. i do take Colloidal Silver myself.
and so far, it seems like it's working. i've just used it for 2 days though.
my point is if few drops is enough, why take too much...