I've tried Crystal Light before, some flavors I do like. I buy it in powder
form, like the ones you mix yourself. Makes more, lasts longer. It does have
aspartame in it.

I was having allergies, then also stalled out on weightloss. So I dropped it
from my diet for a couple weeks, along with other food items. I added in one by
one the food and drink items I thought was causing a problem. I did add in
Crystal Light a week ago. So far, no problem, still losing weight. I drink 2
glasses of it a day. I like the Orange/Bananna/Strawberry flavored the best.

Also some of them have citric acid added to the drinks, adds the tartness to
it. I have read here that citric acid can also cause weight stalls.

So, just add it in for a few days, monitor what happens. It affects everyone
differently. I still cannot tolerate caffeine in any form. It causes sugar
cravings. I tried adding it back in, had some problems. So, caffeine to me is a
problem, to others not a problem at all.