Interesting that the front label says Splenda but the ingredients list includes sorbitol.
@Retired_Engineer: My guess is the splenda adds most of the sweet taste while the sorbitol adds texture (thickness)..
"Sorbitol is only about 60% as sweet as sugar, however. It is also used as a thickener.Sorbitol, or glucitol as it is sometimes called, is a slow-metabolizing sugar alcohol derived from fruits, corn and seaweed."This sweetener can have a laxative effect, and it is not recommended for consumption by children and those with sensitive digestion symptoms or a gastro-intestinal condition such as Irritable Bowel Syndrome (IBS). Sorbitol can cause diarrhea, bloating and gas unless it's consumed in small quantities. It may also cause abdominal pain in some cases. 4951