Colloidal Silver (CS) as an Antiseptic: Two opposing viewpoints

CS preparations for topical and/or oral use were subsequently developed to overcome the astringency of, and staining by, simple silver salts[2] while retaining the long-known antiseptic properties of metallic silver.[3] The older preparations, pre-1910, usually contained high levels of oxidized silver (Ag+), not precipitated by isotonic salt solutions, made from silver nitrate and various carrier proteins or derived polypeptides. Argyrol® is one such product still extant today and formerly much used as an eye disinfectant to prevent neonatal blindness.