HealthAid Sibergin contains highly concentrated Siberian Eleuthero root extract, matured to contain optimum levels of eleutherosides, which are believed to help sustain energy levels*. Eleutherosides in Siberian Eleuthero are believed to offer a steadier- and more natural- release of energy*. It is widely used as an adaptogen. An Adaptogen is a substance that helps the body cope better with either mental or physical stress*. Free From GMO, Yeast, Gluten, Wheat, Starch, Lactose, Dairy, Corn, Nuts, Sugar, Salt, Artificial Colors, Preservatives and Flavorings.