That must be why NASA uses it to purify the astronauts drinking water.
If silver were so toxic, why are there no documented reports of harm from colloidal silver? The blue skin condition known as Argyria is extremely rare, and is not harmful other than the appearance (and it is reversible, contrary to mainstream propaganda). Even the blue man Papa Smurf Karason was given a physical recently and got a clean bill of health from the massive amounts of contaminated homemade ionic silver he took and added salt to.
The facts are that the government has tested silver and found no toxicity. The report has been posted here in this forum if you care to look for it. Furthermore, there are millions of people who have taken colloidal/ionic silver. If the blue condition were such a threat, there should be whole tribes of Smurffs running around.