T.W.
i don't know about propel, but fruit2O is sweetened with splenda (sucralose) which is derived from sugar and *so far* hasn't shown any of the bad things that aspartame and the other artificial sweeteners have been linked to. that's all my 16mo old drinks besides milk and the occasional juice (i also water down the fruit2O like i would juice, don't ask my why lol) and other than juice boxes with meals it's what my 3yr old drinks too. sorry i'm not more help than that