Low fat. Power Bars contain less than 2.5 grams of fat, which is naturally present in ingredients such as grains, cocoa, peanut and other nut butters. With less than 10% of calories from fat, Power Bars are an excellent low fat energy source for athletes and active people on-the-go. Complex carbohydrates. Power Bars contain maltodextrin (a complex carbohydrate from corn), brown rice, and oat bran. About 65 percent of Power Bars 45 grams of carbohydrates are complex carbohydrates. Simple carbohydrates. Fructose, which comes from corn, grapes, and pears, is the main source of quick energy in Power Bars. About 35 percent of Power Bars 45 grams of carbohydrates are simple carbohydrates. High quality milk protein (lactose removed). Power Bars contain high quality milk protein, with the lactose (milk sugar) removed. Free-form amino acids. More than 200 mg. of high quality, free-form amino acids-leucine, valine and isoleucine-are added to each PowerBar. Vitamins and minerals. Power Bars deliver the vitamins and minerals vital for energy metabolism, including 100 percent of the U.S. RDA of vitamins C, E, and the B-complex vitamins, and 30 to 35 percent of essential minerals such as iron, zinc, calcium, and magnesium. Fiber. The oat bran in Power Bars provides high quality soluble fiber.