Low-fat energy bar is a convenient source of high-quality protein that tastes great too PowerBar TriSource protein blend helps in the repair, maintenance and growth of human tissues and muscles. Carbohydrates aid in replenishing muscle glycogen stores and provide energy for protein synthesis after exercise. Methionine, branch-chain amino acids and glutamine support muscles during intense activities. Also contains antioxidants C and E plus B-complex vitamins and minerals. Discount will be applied when you check out offer not valid for sale-price items ending in ._3 or ._9.