Damulin B is a dammarane-type saponin found in Gynostemma pentaphyllum. Damulin B can inhibit cancer cell apoptosis, decrease mitochondrial membrane potential, inhibit ROS production and cause G0/G1 phase arrest. Damulin B can prevent Cisplatin -induced acute kidney injury and induce hair growth. Damulin B shows anti-inflammation anti-diabetic and anti-obesity effect. Damulin B can be used for the researches of cancer, inflammation, metabolic disease, such as lung cancer, osteoarthritis and diabetes[1][2][3][4][5][6].