... immune system 2 adjust bodily systems 3 increase endurance. American ginseng is traditionally used for energy, stress relief, enhancing ... alleviate stress which is a common cause of illness. American ginseng contains dammarane-type ginsenosides as the major biologically ... 20(S)-protopanaxadiol (ppd) and 20(S)-protopanaxatriol (ppt). American ginseng contains high levels of Rb1, Rd (ppd classification) ...