Yes, the particles that are produced at first when current is lowest are prolly smaller. I think the stomach acids are capable of breaking down silver to a more atomic level and not sure how important particle size is. I realize that atomic size particles will start to absorb even in the mouth and may be better that way. Colloidal silver has many uses. One time my daughter was playing in a box of old clothes that had been stored until they were must/moldy and she had a severe red skin break out and topical application stopped it in a few minutes. Use it liberally for all kinds of pathogens.