Ribose is one of the necessary building blocks for the formation of ATP, the universal energy molecule in the body.* Physical stress can deplete ATP stores in cardiac & skeletal muscles.* As the rate-limiting substrate in the synthesis of nucleotides, including ATP, ribose plays a vital role in replenishing ATP, thus, enhancing energy production, improving muscle recovery, & thus Muscle Edge®. Jarrow FORMULAS® D-Ribose is made by microbial fermentation, & is protected by U.S. patents 6, 159, 942, 6, 534, 480, 6, 218, 366, & 6, 339, 716. Keep out of the reach of children. * These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Suggested Usage Take 1 to 3 scoops before or after exercise, or as directed by your qualified health care consultant. Other Ingredients Contains NO other substances. No wheat, no gluten, no soybeans, no dairy, no egg, no fish/shellfish, no peanuts/tree nuts.