This is the base formula (Siwu Tang, Four Substances Decoction) with Guizhi added and the dosage of Danggui doubled. These four formulas can be taken regularly throughout the four seasons, used flexibly according to the syndrome differentiation.

This is Siwu Tang (Four Substances Decoction) with Guigui and Pengzhu added, treating amenorrhea, acute abdominal pain, and heaviness/pain in the waist and legs.

This is Siwu Tang (Four Substances Decoction) with Qianghuo added; another version adds Baizhu and Fuling. Haicang corrected this: mixing the aforementioned five herbs with Cangzhu treats various pains with miraculous effect.

This is Siwu Tang (Four Substances Decoction, 4 liang) with Qianghuo and Fangfeng (1 liang each) added, treating women's bone and tendon pain, headache, wiry pulse, aversion to cold resembling malaria; another version adds Qinjiao and Qianghuo, also known as Fengliuhe Tang (Wind Six-Harmony Decoction), treating dizziness caused by wind deficiency.

This is Siwu Tang (Four Substances Decoction, 4 liang) with Muxiang and Binglang (0.5 liang each) added, treating women's blood and qi rushing upward causing stifling sensation in the heart, abdomen, and hypochondrium; another version adds Houpo and Chenpi, also known as Qiliuhe Tang (Qi Six-Harmony Decoction), treating weakness upon rising and sudden fainting due to qi deficiency; yet another version adds Houpo (1 liang) and Zhishi (0.5 liang), also named Qiliuhe Tang, or Siwu Tang plus modifications.

This is Siwu Tang (Four Substances Decoction) with Yanhusuo and Koushen (stir-fried, 1 liang each) added, treating cold pain below the umbilicus, abdominal pain, and lower back/spine pain in women.

This is Siwu Tang (Four Substances Decoction) with increased dosage of Shaoyao, treating women's qi stagnation invading the meridians, frequent menstruation, and pain below the umbilicus.

This is Siwu Tang (Four Substances Decoction) with Yanhusuo and Koushen (1 liang each), Binglang and Muxiang (0.5 liang each) added, treating colicky pain in the umbilical and abdominal region when menstruation is about to start, and severe pain during menstruation.

This is Siwu Tang (Four Substances Decoction, 4 liang) with Huangqin and Baizhu (1 liang each) added, treating menorrhagia (excessive menstrual flow) in women.

This is Siwu Tang (Four Substances Decoction, 4 liang) with Kuihua added (1 liang), treating scanty and sluggish menstrual flow; another version adds Honghua and Xuejianchou.

This is Siwu Tang (Four Substances Decoction) with Huangqin and Huanglian (1 liang each) added, treating menstrual blood that resembles black bean juice in color.

This is Siwu Tang (Four Substances Decoction, 4 liang) with Shudihuang and Danggui (1 liang each) added, treating scanty menstrual flow with normal color.

This is Siwu Tang (Four Substances Decoction, 4 liang) with Shengdihuang and Dahuang (soaked in wine, 5 qian each) added, treating blood stasis syndrome due to cold-heat complex in pregnancy. It is not advisable to use abortifacient purgatives; if a pregnant woman presents with blood stasis, do not recklessly administer Didang Tang or Taoren Chengqi Tang. Ensure no harm comes to mother and child. In such cases, Dahuang may be taken concurrently with Siwu Tang.

This is Siwu Tang (Four Substances Decoction) with Dihuang removed and Ganjiang added, treating heart pain and abdominal pain unbearable in intensity due to blood deficiency in women; this formula is also named Sishen San (Four Spirits Powder).

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