American ginseng, Siberian ginseng (Eleuthro), and Asian ginseng (Panax Ginseng) have been shown to reduce blood sugar levels. Ginsengosides and eleuthrosides are the components of the edible ginseng root that are thought to reduce glucose levels after meals. The root extract is naturally stimulating. It is thought that ginseng may directly stimulate the body to release insulin. Siberian ginseng is an adaptogen. Adaptogens are stress regulators that help the body to return to a normal state in anxious situations where the sympathetic nervous system response is triggered. Ginseng is available in fresh or dried root form, powder, tea, or liquid extracts. Studies suggest taking 3 grams of American ginseng 1 to 2 hours prior to a meal for best results. 200 mg, taken daily, of Asian ginseng might decrease fasting blood glucose levels.