Ginseng is a medicinal plant widely used for the treatment of various conditions. The pharmacological effects of ginseng have been demonstrated in cancer, diabetes, and cardiovascular diseases and have been used for promoting immune function, central nervous system (CNS) function, relieving stress, and antioxidant activities.  The major bioactive components of P. ginseng are the ginsenosides, a group of saponins with a dammarane triterpenoid structure. Various memory-impairment models have been used to evaluate the effects of ginseng and its active ingredients on learning and memory.