Diet coke with antioxidants

[SageMother]

Her system won't really need to be "flushed" as I am sure she will drink or eat enough of other things to balance everything out.

The body doesn't flush the way you flush and fill a radiator. Selectively permeable membranes at the cellular level regulate the flow of basic chemical chains once digestion has begun. The more immediate problem is just moving fluid, any fluid, through the system without creating gastric distress.

As far as antioxidants, I don't think I have seen anything proposing what a truly therapeutic level is. Unless you are taking them in pill form, their presence is usually advertised as a gimmick to create sales. This is true of Coke and is also true of many products marketed under the "organic" umbrella.