Does anyone have an opinion as to the best Colloidal Silver supplement to use. I don't want to get a flue shot because a couple years ago I had a terrible reaction and so instead I want to use Colloidal Silver as a preventative. There are so many to choose from some costing ridiculous prices. The best priced one so far is by Garden of Eden. Has anyone tried it. And Ebay seems to have taken all Colloidal Silver supplements off their US site, except they still have colloidal silver listed on their UK site. Any opinions? Thanks.