Inosine is a nucleoside formed by the union of a molecule of D-ribose with one of hypoxanthine. It is a metabolic activator and some of its compounds enter energy cycles. various effects have been attributed to this molecule such as the increase in oxygen transfer to the tissues (due to the increase of 2.3 diphosphoglycerate), the increase in ATP, improvement of endurance performance, improvement of liver function and other organs , increase in strength, cardioprotective and neuro-protective activity and increase in cognitive skills