Cistanche deserticola is a rare and precious tonic herb from the remote desert of Inner Mongolia, virtually in the shadow of Heaven Mountain. It is one of the most revered herbs in Asian herbalism. Cistanche stem is a very potent Jing tonic herb that nurtures both Yin and Yang. It is renowned as a Yang tonic that promotes sexual and physical prowess. It is famous among almost all Asians as "the herb that Genghis Khan consumed." Genghis Khan was one of the most powerful men that ever lived and founded the largest empire in the history of the world. He also fathered more children than any other known man. Cistanche Drops is made from superior grade (above commercial grade) mature, sustainably wildcrafted plants.