Siberian ginseng (Eleutherococcus senticosus) root is classified as an adaptogen, able to help the body adapt to stress and restore balance. It is helpful for fatigue, especially mental fatigue. Siberian ginseng supports and enhances adrenal function and strengthens the immune system. Well-known naturopathic physician, and author, Donald Brown, shows how Siberian ginseng helps to adapt to stress: While stress can eventually wreak havoc on a number of body systems, its initial target is the adrenal glands. Chronic stress can overwhelm the adrenals and lead to chronic fatigue, poor immune function, and improper blood sugar metabolism. As an adapatogen, eleuthero helps us adapt to stress. It does this by providing fuel to the adrenal glands, allowing them to function optimally when challenged by stress. This means eleuthero should be considered as a daily supplement for anyone experiencing stress on a regular basis.