Sucralose is an artificial sweetener and sugar substitute. The majority of ingested sucralose is not broken down by the body, so it is noncaloric.In the European Union, it is also known under the E numberE955. Sucralose is about 320 to 1,000 times sweeter than sucrose,three times as sweet as aspartame, twice as sweet as sodium saccharin and three times as sweet as acesulfame potassium. Evidence of benefit is lacking for long-term weight loss with some data supporting weight gain and heart disease risks.

It is stable under heat and over a broad range of pH conditions. Therefore, it can be used in baking or in products that require a longer shelf life. The commercial success of sucralose-based products stems from its favorable comparison to other low-calorie sweeteners in terms of taste, stability, and safety.