Si Wu Tang (Four Substance Decoction)

Si Wu Tang (四物湯), ‘Four Substance Decoction’, is the foundational blood tonic. It tonifies and invigorates the blood and regulates menstruation, and is the basis of countless gynaecological formulas.

Sì Wù Tāng  ·  四物湯  ·  Four Substance Decoction

English Name

Four Substance Decoction

Classical Source

Tai Ping Hui Min He Ji Ju Fang, 1107

Ingredients

Actions & Functions

  • Tonifies and nourishes the blood
  • Invigorates the blood and regulates menstruation

Indications

Blood deficiency (often with some stasis): a pale, lustreless complexion, dizziness, palpitations, and irregular, scanty or painful menstruation.

Tongue & Pulse

Tongue: pale. Pulse: thin and wiry, or thin and choppy.

Modifications

Add Tao Ren and Hong Hua (Tao Hong Si Wu Tang) for blood stasis; combine with Si Jun Zi Tang (Ba Zhen Tang) for qi and blood deficiency.

Cautions & Contraindications

Cloying; use with caution in Spleen deficiency with poor appetite and loose stools.

About Attilio

Doctor of Chinese medicine, acupuncture expert and author of My Fertility Guide and My Pregnancy Guide.

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Network Meta-Analysis Finds Chinese Herbal Decoctions Improve Outcomes and Reduce Side Effects in Breast Cancer Treatment

Research summary (Traditional Chinese Medicine): Efficacy and safety of traditional Chinese medicine decoctions in breast cancer treatment: a network meta-analysis. - Frontiers in oncology, 2026.