Your information about using a CS product made from an almost pure silver couldn't be more correct; however, I'm sorry to hear that you have been consuming Colloidal Silver produced from .999 silver.
I myself don't consume jeweller's silver....too many toxic metals....AND YOU HAVE BEEN. You NEVER make, or take CS unless you know for certain that it is produced from .9999 silver.
.9999 = 99.99% pure silver.
.999 = Sterling Silver