I don't have much information on inulin. It is present in a wide variety of vegetables and fruits. It was listed in the formulations of the 4YourType Herbals (discontinued) for types A and AB. It is a probiotic, with slight sweetness and is probably in your stevia extract to moderate the flavor and aid digestibility. At this time, of course, it has no rating. That said, I see no reason to avoid it. Unless it causes stomach upset, I think you'll find it does no harm at all. and that's the sum of my offerings on inulin!