I am not sure about B-17 as I do not know a lot about it.
Colloidal Silver kills most any bacterium it comes into contact with, good or bad. For this reason I prefer to use MMS as the first treatment, as it only kills acidic pathogens, and they are usually not beneficial.
If that does not work, then Colloidal Silver may be needed, as it is not as selective. In general, I do not like using Colloidal Silver, as it leaves a residue in the body. However as with any other treatment, you have to weigh the relative risk of the treatment, which still is quite low with CS, to the risk of the condition you are treating.
Dan
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