I had cramps and diarrhea after drinking a mix with splenda and also one with aspartame. Is there any safe sweetener I can use? As far as I've seen I would be even safer just drinking pure sugar. What is strange is I have had diet sodas with both splenda and aspartame in them and nothing. There must be more of it in the diet powdered mixes. My sister drinks them too and they don't bother her at all. Anyway back to the question has anyone heard of any other sweeteners I can try? Thanks alot. :-)