It may be the FILLER used in any of the powdered sweeteners that could aggravate intestinal problems. Maltodextrin is a fluffy white carb that they use to add bulk to artificial sweeteners, which makes them easier to measure and use. Maltodextrin is spun from highly refined corn starch or sometimes barley. If you have digestive problems with grains, this might be the culprit in addition to the ½ cup of butter that would be in 3 treats.

Just a thought,

Doreen