Pterostilbene powder , as a dimethylated stilbenoid derivative of resveratrol,belongs to the group of phytoalexins protecting plants against pathogens and infections.Naturally, pterostilbene usually exists in many plants and fruits like pterocarpus marsupium, anogeissus acuminate, rheum rhaponticum,almond,peanuts, blueberries, cranberries and grapes. Pterostilbene diverse pharmacological activities, which include cancer prevention, a cholesterol-lowering effect, enhanced insulin sensitivity, and increased life span.