Silver Hydrosol is marketed as a Dietary Supplement. In the US, supplements are regulated by the FDA in a different category than drugs. Natural Immunogenics will not make drug claims in its marketing materials, even though many other colloidal silver manufacturers do. Making drug claims against specific infections or diseases, even if heavily substantiated, would risk re-categorization of our hydrosols as unapproved new drugs (requiring an NDA/New Drug Application at a potential cost of millions of dollars). We take very seriously the regulations and abide by strict manufacturing requirements (cGMP) to assure that each batch of finished product is as pure and safe as the last. See What We Can’t Say and Why.