A woman can drink Four Substances Soup when she has blood deficiency and stagnation as prescribed by her doctor, but there is no clear rule on the best time for a woman to drink Four Substances Soup. Four Substances Soup is composed of Angelica sinensis, Rhizoma Ligustici Chuanxiong, Radix Rehmanniae Praeparata and Radix Paeoniae Alba, which has the effect of tonifying and regulating blood, and is suitable for female patients suffering from the syndrome of Ying and Blood Deficiency and Stagnation (deficiency of blood in the body). Patients may suffer from insomnia, palpitation (rapid heartbeat, often accompanied by panic), dizziness, yellowish (yellowish and lusterless) or pale complexion, pale lips and nails, irregular menstruation, scanty menstruation or amenorrhea, and vague pain in the umbilical cord and abdomen. Four Substances Soup is not suitable for patients with cold and fever, women who meet the above symptoms and have a TCM doctor to identify the symptoms can use Four Substances Soup, avoid spicy and greasy food during the period of taking the medicine. Ask a professional Chinese medicine doctor for guidance before use, don’t use it blindly, and there is no such thing as the best time to take it.