There is a lot of information online about colloidal silver, but unfortunately a lot of that information misleads people to believe that it is unsafe and provides no real research information. There are plenty of testimonials about the dangers of argyria and that it is caused by taking silver colloid products, but what most people do not realize is that what they took is home made. Home made products are ionic silver, not the colloidal silver that they claim it to be and they may not even know the difference, which just makes it that much harder to figure out what the truth is.
There are, however, a few websites online that actually care about the truth and want to simply inform those of us that are curious about the facts so that we may make our own decision. These sites compare colloidal silver products to let others see the difference.