Qn about Phosfoods, Phosphoric acid & stones

Hi there,

Your testimony for PhosFoods is wonderful and I'd heard other good things about it.

I wanted to know if the main ingredient in PhosFoods is phosphoric acid?
I read recently about the Coke and Asparagus kidney flush, which seems to rely in part on the phosphoric acid in coke to help dissolve kidney stones. So, I'm sorry if this is a dumb question or I am hopelessly confused but the general medical advice is to avoid products containing phosphoric acid because it supposedly causes kidney stones. I don't understand, could you (or anyone else) explain what the truth is, does phosphoric acid dissolve stones OR create them?

Thanks,
Bronte