D-RiboseD Ribose synthesizes adenine nucleotides, which are required by cardiac muscle and other tissue to make adenosine triphosphate (ATP), the primary source of energy used by all cells to maintain normal health and function.* D Ribose may be ideal for athletes and individuals seeking cardiovascular health and energy support.* This formula provides 5 g of D ribose per serving in a convenient, unflavored powdered delivery that mixes easily in liquids.