Dietrine carb blocker is a non-stimulant, all-natural nutritional ingredient that is derived from the white kidney bean through a proprietary process. As a starch blocker it is the first nutritional ingredient that has been clinically & scientifically proven to neutralize starch, found in your favorite foods such as potatoes, breads, pasta, rice, corn and crackers.It is a safe yet powerful nutritional ingredient, clinically studied to reduce the absorption of carbohydrate calories.