An Adaptogen is a substance that helps the body adapt to various types of stress. In order to achieve this status a plant must be harmless to the body. It must also have a broad-spectrum, normalizing action that brings an organism back to homeostasis. Through Russian Research, Eleuthero became the model for all other adaptogens. In the late ‘60’s and ‘70’s, studies were conducted in over 2,100 healthy people. These studies showed that Eleuthero increased the ability of subjects to withstand stress such as heat, noise, motion, exercise, and increase in workload. Subjects also experienced a normalization in mental alertness and work output. The exact mechanism of action of Eleuthero and the significance of each of its various constituents is not yet fully understood.