Dextrose is a sugar that comes from corn. Dextrose is less sweet than cane sugar and contains about 4 calories per gram.
A gram of dextrose is approximately 1/3 of a teaspoon.
One gram of dextrose contains exactly 1 g of carbohydrate. There is no protein or fat in dextrose.
Dextrose is a simple sugar, or monosaccharide, meaning that it has only one sugar molecule. Since there are no chemical bonds to break during digestion, your body absorbs it almost instantaneously.
Because it is such a quick source of energy, dextrose is an ingredient in some diabetic medications. Endurance athletes also use dextrose during long workouts to provide their muscles with a quick carbohydrate supply to preserve the energy stored in their muscles.
Dextrose is a very high-glycemic-index food, meaning that the sudden sugar rush in your bloodstream causes your body to release more insulin. Frequent consumption of high-glycemic-index foods and the resulting insulin surge can lead to insulin resistance and become detrimental to your long-term health.