Crenulate(Rhodiola rosa) is a voluble medicinal plant mainly produced in the mountains of Tibet, Xingjiang, Gansu and Jilin, China. It belongs to Rhodiola family, a kind of perennial plant. Its root and rhizone are taken as medicines(Both the aeriol part and underground one of it can do) salidroside and its aglycone along with the tyrosol in the liquid extract are the special health care product used to take care of the personnel who are working professionally under particular circumstances, they can also resist against fatigue. It improves your intelligence and health as well as the working efficiency as ginseng does. However, it is preferable to ginseng which is too stimulant to be taken in the long run. It can treat cardio-cerebrovascular vein diseases, consumption, lung inflammation and antagonize oxygen-deficiency.