Sensato Tagatose is a natural sweetener that is slightly less sweet than sugar. It can be used cup for cup the same as sugar. It has 92% of the sweetness but only 38% of the calories. It is a monosaccharide with a simple molecular structure similiar to glucose. Tagatose is derived from dairy and has a taste and texture similiar to sugar. Tagatose is a prebiotic, which can assist in the development of beneficial bacteria in the gut. It is a low glycemic sweetener (3 on the Glycemic Index), and low in carbohydrates (especially considering that many of the carbohydrates are treated as fiber in the body and not digested).