Numerous experimental and clinical observations have made it possible to establish that extracts form adaptogenic plants Leuzea carthamoides, Rhodiola rosea, Eleutherococcus senticosus, Shizandra chinensis and some separated constituents of them are able to: Enhance Energy Level Increase Muscle Mass Increase Strength and Endurance Improve Blood Circulation in Muscles and Brain Restore Sexual Activity and Fertility Improve Mental Workability Restore Immune System Activity Prevent Common Cold Appearance Act as Antioxidants Decrease Consequences of Stress These properties contribute to the adaptation of the body to the effects of various stressors and thereby increase its nonspecific resistance against stress-related illnesses.