If I remember right, sanbitter is Sanpellegrino's take on the flavor that goes by the generic name of "ginger" in Italy. It's been about 10 years since I lived there, but I think that's about right. If sanbitter gives you the faint reminiscence of vomit flavor, then it's a dead match for "ginger". Which I don't know if it has actual ginger in it or not. That probably doesn't help you, but it will at least give you some more search terms to try.
My mistake, just browsed through the Italian wikipedia and it turns out I'm horribly wrong. It's possible that I just associated them because they're the same color.