Two types of sugar substitutes are available:
Also, check this out: The Messy Explosive Side Effects of Sugar-Free Gum
http://www.digitaljournal.com/blog/1374Andra Picincu wroteNon-caloric sweeteners: aspartame (NutraSweet, Equal), saccharin (Sweet'N Low, Sweet Twin, Necta Sweet), acesulfame K (Sunett and Sweet One), neotame (not yet marketed under a brand name), and sucrose (Splenda).
Reduced-calorie sweeteners: sorbitol, mannitol, lactitiol, maltitol, xylitol, isomalt, erythritol, and hydrogenated starch hydrolysates.
Also, check this out: The Messy Explosive Side Effects of Sugar-Free Gum