"Jarrow Formulas D-Ribose, featuring Bioenergy Ribose, is made by microbial fermentation and is protected by U.S. patents 6,159,942, 6,534,480, 6,218,366 and 6,339,716. 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 and skeletal muscles. As the rate-limiting substrate in the synthesis of nucleotides, ribose plays a vital role in replenishing ATP, which helps to promote cellular energy, muscle recovery, and endurance."Dietary Considerations Wheat Free Dairy/ Milk Free Gluten Free Vegetarian Soy Free Vegan Egg Free Shellfish Free Non-GMO Fish Free Tree Nut Free Peanut Free NSF Certified Suggested UseTake 1 scoop (2 g), up to 3 times per day with water or other fluid, before or after exercise or as directed by your qualified healthcare professional.Serving Size:1 Scoop Servings Per Container: 90 Amount Per Serving % Daily Value Calories 10 Total Carbohydrate 2 Total Sugars 2 Includes 2 Added Sugars 4% D-Ribose 2 WarningsNo wheat, no gluten, no soybeans, no dairy, no egg, no fish/shellfish, no peanuts/tree nuts. Contains NO other substancesPackaged by weight, not volume. Keep out of the reach of children.If you have a medical condition, are pregnant, lactating, trying to conceive, under the age of 18, or taking medications, consult your healthcare professional before using this product.Keep out of the reach of children. Store in a cool, dry place; keep lid tightly closed.