Dietary Supplement Science-Based Nutrition Supports ATP Production in Heart and Muscle Tissue Decreases Free Radical Formation During Exercise Bioenergy Ribose Suitable for VegetariansD-ribose is a natural compound made by your body throughout life. D-ribose is a pentose sugar, or a 5-carbon sugar (more familiar sugar like glucose and fructose have 6 carbon atoms). As part of RNA and DNA, D-ribose is needed for cell maintenance and growth. Ribose initiates the production of the critical energy molecule ATP, the primary energy source of cells. ATP is rapidly depleted in muscle tissue by strenuous exercise. D-ribose is a core supplement for maximizing energy levels in a healthy way, without the drawbacks of stimulant ingredients. Studies suggest that ribose can help support energy recovery after exercise. Exercise increases free radical production in muscle tissue. Ribose supplementation may strengthen and support the body"s crucial antioxidant defenses.