Ligustici Wallichii, Rhizoma (Chinese: chuan xiong) increases and improves the circulation of blood and promotes the flow of energy, strengthens the muscles and bones, alleviates pain, and promotes clear vision and hearing. Can be used for irregular or painful periods and headaches. Ligustici combined with Angelica Sinensis was called the "Buddha's Hand" (a reference to it's pain relieving effect) by Xu Shu-wei (ca. 1132AD) . Use 3-6 grams.