Semen Zizyphi Spinosae. Part used: Seed. Known as Sour Jujube Seeds. Entering meridians: Gallbladder, Heart, Liver and Spleen. Suan Zao Ren nourishes heart Yin, tonifies liver blood, calms the Spirit, astringes sweat and generates fluids. Suan Zao Ren is a PaoZhi processed herb making it more effective at releasing active components to enhance medicinal properties. All Phoenix Medical dry authentic herbs and concentrated herbal granules are free of sulphur, herbicides and pesticides.