Ginseng

There are two main types of ginseng that contain the active ingredient of ginsenosides: Asian (Panax ginseng) and American ginseng (Panax quinquefolius). Depending on the variety of ginseng used, this herbal supplement is best known for its traditional use of boosting memory and energy levels. Studies have also shown that it may also have a positive effect on stimulating the immune system and lowering blood sugar levels.