I've been drinking a product called Wyler's Light. But after finding this thread I stopped. Now I'm researching it to see if I might be putting sugar in my system without knowing about it.
Here's the list of ingredients:
citric acid, maltodextrin, aspartame, artificial flavor, red 40; contains less than 2% of the following: ascorbic acid, magnesium oxide, acesulfame potassium, monocalcium phosphate, blue 1