Four Substance Soup needs to be soaked in water for about 20~30 minutes, then bring the water together and decoct over high heat, bring to a boil, turn down the heat and simmer for a few moments, then pour out and let it cool down until it is lukewarm enough to be taken. Due to the different dosages of medicines, it is recommended to consult a physician for the specific decoction method. Four Substances Soup is a blood tonic formula composed of white peony, Radix Rehmanniae Praeparata, Radix Angelicae Sinensis, Rhizoma Ligustici Chuanxiong and other herbs. Four Substances Tang can tonify, invigorate and nourish Blood, and is often used in treating palpitations (rapid heartbeat, often accompanied by panic) and insomnia, pale lips and nails, and bluish complexion caused by deficiency of Ying and Blood (deficiency of blood in the body). Adverse reactions and contraindications are not clear, and it is recommended to use it under the guidance of a Chinese medicine practitioner. Patients are advised to seek prompt medical attention if they feel unwell, so as to avoid any delay in their condition.