Sweeteners (Food & Drink)
What is a sweetener - a sugar replacement with no nutritional value. Usually an additive
Nearly all have some risk, for more information see the Sweeteners (Toxins) article.
Sugar
Aspartame
Saccharin
Sucralose
TL;DR
Sucralose is considered safe, non-toxic and non-carcinogenic.
aka Splenda (but Splenda has bulking agents)
E955 in the EU
Safe but probably best not to cook with it
Only slightly less calories than sugar: 3.3 per gram (but you need far less as it's so sweet)
600 times sweeter than sucrose (table sugar) 3 times sweeter than aspartame 2 times sweeter than saccharin