Stay away from liquid sucralose...Its one of the major reasons that created my candida condition. My health took a turn for the worst once i started to drink more sucralose soft drinks. Its estimated that sucralose can kill up to 50% of your friendly bacteria. Not to mention all the side effects that come from ingesting it.
Collodial silver might effect friendly bacteria as well. Might be effective topically or for a mouth wash though. I would not take collodial silver internally its too contraversial as far as its effect on friendly bacteria.