First of all, remember that they are what they are: sugar-free candies. Sugar substitutes generally create laxative effects, depending on the person, that can range from mild gassiness to, well, let's not get into that. I think more than one piece is safe--at least 3 or 4 in most cases--but it depends on you. And that's not the fault of the candy, it's the territory in general--most, if not all such candies have that effect.That said, this is one of my favorite diabetic-friendly candies. They taste very much like the sugary ones I ate as a child. Everyone will have their favorite flavors, but the selection they have is bound to be most satisfying; the flavors are good, the taste well-crafted.The one drawback I found: if left too long, they will start to congeal or melt in the wrappers. One time I ordered them and it took a month or two for this to start happening; another time I ordered them, they were already starting to go.All told, it's a product I will be buying often over time.