How many calories in aspartame

* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. Calories per gram: Fat 9 • Carbohydrate 4 • Protein 4. Aspartame is an amino acid-based low-calorie sweetener that was discovered in It is comprised of aspartic acid and phenylalanine, two of the 20 amino. Artificial sweeteners are low-calorie or calorie-free chemical substances used acesulfame K; aspartame; saccharin; sorbitol; sucralose; stevia; xylitol.