Elizabeth:
Welcome to the most informative place anywhere for AS.
My wife- the one with AS- uses the powdered form of Stevia
all the time and does not seem to react; however, given in context, her diet is rather impeccable: fruits, vegies and fish or some other lean protien (eggwhites/chicken). Her deserts are frozen fruit with almond milk and some Stevia; it seems to work for her.
Good luck.
