Paeoniae Lactiflorae Radix (Bai Shao 白芍) Gallery Paeoniae Lactiflorae Radix (Bai Shao 白芍) Paeoniae Lactiflorae Radix (Bai Shao 白芍) bitter, sour, slightly cold; affinity to Liv. & Sp. meridian nourishes blood, regulates menstruation; pacifies liver, alleviates pain; restrains Yin, adjusts Yin and Wei level, reduces sweat;