Ribose is an essential pentose (5-carbon) sugar utilized by the body to synthesize DNA, RNA and produce energy. (Ribose is a “sugar” distinct from glucose. It does not raise blood sugar levels or lead to diabetes.) Ribose is a fundamental building block of adenosine triphosphate (ATP – the substance in which the body stores intracellular energy), the preferential source of energy for skeletal muscle and heart tissue. Studies have shown that ribose supplementation can enhance cardiac energy levels and support cardiovascular metabolism. * Further studies suggest that ribose plays a role in supporting energy recovery after exercise. * Exercise increases free radical production in muscle tissue. Ribose may strengthen and support the body’s crucial antioxidant defenses.