Liu huinu is effective in promoting blood circulation, eliminating blood stasis, clearing menstruation, relieving pain, cooling blood, stopping bleeding, clearing heat and inducing dampness (removing heat and dampness from the body). Liu Huan Nu is the dried whole herb of Yin Xing Cao (阴行草), a plant of the family Xuan Shen (玄参), which is bitter in taste and cold in nature, and belongs to the meridians of the spleen, stomach, liver and gallbladder. It is used in treating bruises and injuries, traumatic bleeding, menstrual bleeding, menstrual disorders, postpartum stasis and pain, impediment in the abdomen (visible or invisible lumps in the abdomen with distension and pain), dysentery, hemorrhagic dribbling (the appearance of blood in the urine accompanied by pain), dampness-heat jaundice, oedema and abdominal distension, and leucorrhoea. The adverse reactions and contraindications of Liu Huanu are not clear, if you need to use it, please under the guidance of a professional physician, do not take it blindly, so as not to affect your health.