how much should I take?

Hi,

I have had a little accident yesterday, were a nail got stuck through my finger. It was removed in the emergency room 2 hours later.
The doctor advised me to take Antibiotics , but I don't feel like it since it also damages the beneficial bacteria in the gut system.

I have heard about Colloidal Silver and that it does the same, but without harming the gut bacteria, is this correct?

The pharmacy in my town does not sell Colloidal Silver , but says she can make me some from dried colloidal powder that she has in store.
She offered to make a solution with 100 ml distilled water and 1 gram of the powder.

Can any one advice me on how many parts per million this would yield?

How much of this solution should I use per dose and how many times per day should I repeat this?

Do I take it orally, or apply it on the finger?

Thanks in advance!