One of the best-tasting, low carb PROTEIN BARS on the market, Quest PROTEIN Bars are only 190 calories and provide 21g of protein with only 3g of active carbs (derived from nuts, not sugar). Sweetened with stevia, erythritol (sugar alcohol) and sucralose (sweetener with fewer calories and carbs than sugar), Quest Nutrition Protein Bars are a great low carb meal replacement that is just as nutritious. Quest Chocolate Chip Cookie Dough Protein Bars are a delicious and great way to lose weight, or gain muscle; without the added calories, carbs, or sugar.