It probably means that yes,in part..(as some part is ingested-sallowed mixed with the saliva etc..
I also used to brush my teeth with baking soda..
So the other option is to use Sea Salt
Humble states that one must waits a few hours after usimg Miracle-Mineral-Supplement to take vitamin C.. or juice that contains it(like added,etc..)
So try it;or if you use baking soda,wait a minimum 2 hrs...
And check the other threads- in regards to Jim Humble- in fact I do urge every one that still has an unopened bottle to VERIFY it as per Jim Humble's protocol..