will not kill viruses. Antibiotics
are used with a cold if there appears to be bacterial infection as a result of the cold. I haven't found it as effective against viruses as against bacteria. Maybe others have had a different experience.
My husband and I always use silver for a cold, however I find that for us, the main thing it does once we actually get a cold is prevent baterial infection in the lungs and sinuses.
If I have a bacterial infection in the sinuses or lungs from the cold, it sometimes takes maybe 4-7 days to get rid of it completely with the silver. I also use silver in a nebulizer for my lungs. I have been able to avoid the use of Antibiotics
this way for many years.
We also add in some herbs some other things to combat viruses and bacterial infections. Here's some info: