As kephra stated, the salt is inconsequential.
They do not add salt! As Kephra found out a while ago, due to the fact they use HCL in the corn syrup manufacturing process, once that process is complete, they have to add sodium hydroxide to neutralize the PH, the byproduct of which is a small amount of sodium chloride, a.k.a. salt. Its a minuscule amount though and has no negative effect on the colloidal silver.
There's a little vanilla in there also and here too I'm suspecting its a tiny amount and of no consequence for making colloidal silver.