8 non nutritive sweeteners have been approved by the U.S. Food and Drug Administration (FDA) acesulfame potassium( combo with others) luo han guo (monk) fruit extract (10-250 times) Neotame (7000-13,000 times sweeter than sugar) Saccharin (200-700 times sweeter) Stevia (200-300 times sweeter) Sucralose (600 times sweeter) advantame (20,000times sweeter than sugar) Aspartame(200 times sweeter than sugar) Sugar polyols such as xylitol Tagatose erythritol Aspartame saccharin are most common artificial sweeteners which have unique sweetness properties with low calories contribution.