sorry, format did not work,,, 3 types of colloidal silver
True colloidal silver
Ionic silver
Silver protein
Short answer is 1) taken orally; it is not effective for treating any illness, will not protect you against viruses and 2) in high does can cause possibly irreversible serious health problems, including kidney damage and neurological problems such as seizures and 3) can cause argyrosis, but unless you are planning to join the Blue Man Group, not something you want.