Prior to the invention of penicillin in the 1940s, colloidal silver was often prescribed to treat various bacterial infections and was taken as an internal antidote. This was a prescription largely up to the doctor’s discretion, but without the potent antibiotics that emerged from penicillin it was a tough fight for anyone with an infection.
There have been hundreds of clinical studies that can be found on Pubmed.com that support the idea of silver plating on surgical instruments, catheters and joint implants to inhibit and prevent the growth of bacteria. Unfortunately, you’ll find little in the clinical archives on the health benefits of colloidal silver. There could be a few reasons for this, but the primary reason is probably that there’s no motivation for anyone to study an outdated treatment dating back to the 1940s.
There is evidence in some clinical studies that the external use of colloidal silver will inhibit or prevent the growth of bacteria. This was actually the most common use in the pre-penicillin days, and the eventual development of the “tricins” such as bacitracin, mycitracin and other topical treatments found in triple antibiotic ointments like Neosporin.
This external colloidal silver treatment often involved permeating a bandage with the colloidal silver liquid and applying it to the wound, burn and in some cases in the eyes of infants to prevent eye infections.