Thank you for the upvote and thank you for your opinion.
I am a medical practitioner.
Silver has been used prior to the introduction of antibiotics, however, if it had better performances, antibiotics wouldn't push the silver into history. Certain salts of silver are used to treat, cure prevent and diagnose diseases. I am not sure if it's approved by the FDA, but you can find official drugs with silver in European Pharmacopeia. Silver definitely has bactericidal properties and has a medical purpose, but there are better remedies than silver.

Once again, thank you for the upvote and for expresing your opinion.