Formula

Tao Hong Si Wu Tang

Peach Kernel, Carthamus Four Herb Combination | 桃红四物汤

Also known as:

Four-Substance Decoction with Safflower and Peach Pit , Four Substance Decoction Modified

Key Ingredients

Shu Di Huang, Dang Gui

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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About This Formula

Traditional Chinese Medicine background and properties

Formula Description

A classical formula that both nourishes and invigorates the Blood, used to address menstrual irregularities, period pain, and other conditions caused by Blood stagnation combined with Blood deficiency. It builds on the famous Si Wu Tang (Four-Substance Decoction) by adding Peach Kernel and Safflower to strengthen its ability to move stagnant Blood and promote healthy circulation.

Formula Category

Main Actions

  • Invigorates Blood and Dispels Stasis
  • Nourishes Blood
  • Regulates menstruation
  • Moves Qi in the Blood level
  • Unblocks the Channels and Alleviates Pain

TCM Patterns

In TCM, symptoms don't appear randomly — they cluster into recognizable patterns of disharmony that reveal what's out of balance in the body. Tao Hong Si Wu Tang is traditionally associated with these specific patterns.

The following describes this formula's classification within Traditional Chinese Medicine theory and is provided for educational purposes only.

Why Tao Hong Si Wu Tang addresses this pattern

Blood stasis in the uterus and Chong-Ren vessels is the core pathology this formula treats. When Blood accumulates and fails to flow, it causes painful periods, dark clotted menstrual blood, and irregular cycles. The formula's Deputies, Tao Ren and Hong Hua, directly break up and dispel the stagnant Blood. Meanwhile, Dang Gui and Chuan Xiong keep the Blood moving so it does not re-congeal, and Shu Di Huang and Bai Shao replenish the Blood that was depleted by the stasis. The overall effect is to clear old stagnant Blood and generate fresh, smoothly flowing Blood.

A practitioner would look for one or more of these signs

Premenstrual Pain

Cramping or stabbing abdominal pain before or during the period

Blood Clots In Period

Menstrual blood that is dark purple with clots

Irregular Menstruation

Periods arriving early, late, or with irregular flow

Dark Complexion

Dull, dark facial complexion

Pale Tongue

Tongue with purple or dusky color or visible purple spots

How It Addresses the Root Cause

This formula addresses a condition where Blood Deficiency and Blood Stasis exist together and reinforce each other. In TCM theory, the Liver stores the Blood and governs its smooth flow. When the Liver Blood becomes deficient, it loses its natural fluidity, becoming sluggish and prone to stagnation. Conversely, once stasis forms, it obstructs the channels and vessels, preventing fresh Blood from being generated and circulated properly. This creates a vicious cycle: deficiency breeds stasis, and stasis deepens deficiency.

The hallmark presentation involves menstrual irregularity. Periods may arrive early because stasis generates local Heat that pushes the Blood recklessly. The menstrual blood appears dark purple, thick, and sticky with clots, reflecting the stagnant, congealed nature of the Blood. Abdominal pain, often with a fixed, stabbing quality, arises because "where there is stasis, there is pain" (不通则痛). The tongue may show a purplish hue or petechiae (dark spots), and the pulse is typically choppy or wiry, signs that Blood flow is obstructed.

The formula resolves this dual pathology by simultaneously nourishing new Blood and breaking up old stasis. As Tang Zonghai emphasized, you cannot simply attack stasis without replenishing what has been lost. By generating fresh Blood while clearing the stagnant old Blood, the formula restores the natural cycle of Blood renewal. Old stasis is expelled, new Blood fills the vessels, and Qi flows freely again to regulate the menstrual cycle and relieve pain.

Formula Properties

Temperature

Warm

Taste Profile

Predominantly sweet and acrid (pungent), with a bitter undertone. Sweet from Shu Di Huang and Dang Gui to nourish and tonify, acrid from Chuan Xiong, Tao Ren, and Hong Hua to move and circulate, bitter from Tao Ren and Bai Shao to direct downward and disperse stasis.

Target Organs
Liver Heart Spleen Uterus
Channels Entered
Liver Heart Spleen Chong Mai (冲脉) Penetrating Vessel Ren Mai (任脉) Conception Vessel

Formula Origin

Yi Lei Yuan Rong (医垒元戎) by Wang Haogu, as cited in Yu Ji Wei Yi (玉机微义); the name 'Tao Hong Si Wu Tang' first appears in Yi Zong Jin Jian (医宗金鉴)

This is just partial information on the formula's TCM properties. More detailed information is available on the formula's dedicated page

Ingredients in Tao Hong Si Wu Tang

Detailed information about each herb in Tao Hong Si Wu Tang and their roles

Kings
Deputies
Assistants
Shu Di Huang
Shu Di Huang

Prepared Rehmannia root

Dosage: 12 - 15g

Temperature Slightly Warm
Taste Sweet (甘 gān)
Organ Affinity Liver, Kidneys
Parts Used Tuber (块茎 kuài jīng / 块根 kuài gēn)
Role in Tao Hong Si Wu Tang

Richly nourishes Yin and Blood, providing the material foundation of new Blood to replace what has been lost or obstructed. Its heavy, nourishing nature ensures that Blood-moving herbs do not deplete the body's resources.

Dang Gui
Dang Gui

Chinese Angelica root

Dosage: 12 - 15g

Temperature Warm
Taste Sweet (甘 gān), Acrid / Pungent (辛 xīn)
Organ Affinity Liver, Heart, Spleen
Parts Used Root (根 gēn)
Role in Tao Hong Si Wu Tang

Both nourishes and invigorates the Blood. It tonifies the Liver Blood, regulates menstruation, and gently moves Blood, bridging the formula's dual strategy of supplementing and activating.

Tao Ren
Tao Ren

Peach kernel

Dosage: 6 - 9g

Temperature Neutral
Taste Bitter (苦 kǔ), Sweet (甘 gān)
Organ Affinity Heart, Liver, Large Intestine
Parts Used Seed (种子 zhǒng zǐ / 子 zǐ / 仁 rén)
Role in Tao Hong Si Wu Tang

A strong Blood-moving herb that breaks up Blood stasis, especially in the lower abdomen and uterus. It works powerfully to dispel congealed Blood clots and open obstructed channels.

Hong Hua
Hong Hua

Safflower flower

Dosage: 4 - 6g

Temperature Warm
Taste Acrid / Pungent (辛 xīn)
Organ Affinity Heart, Liver
Parts Used Flower (花 huā)
Role in Tao Hong Si Wu Tang

Invigorates Blood circulation throughout the vessels, unblocks the channels, and relieves pain. Complements Tao Ren by working more on moving Blood flow within the vessels rather than breaking solid clots.

Bai Shao
Bai Shao

White peony root

Dosage: 9 - 10g

Temperature Slightly Cool
Taste Bitter (苦 kǔ), Sour (酸 suān)
Organ Affinity Liver, Spleen
Parts Used Root (根 gēn)
Role in Tao Hong Si Wu Tang

Nourishes Blood and preserves Yin, softens the Liver, and moderates pain. Its astringent, collecting nature balances the dispersing actions of the Blood-moving herbs, preventing excessive loss of Blood and Yin.

Chuan Xiong
Chuan Xiong

Sichuan lovage rhizome

Dosage: 6 - 8g

Temperature Warm
Taste Acrid / Pungent (辛 xīn)
Organ Affinity Liver, Gallbladder, Pericardium
Parts Used Rhizome (根茎 gēn jīng)
Role in Tao Hong Si Wu Tang

Known as the 'Qi herb within the Blood', it invigorates Qi to drive Blood movement, ensuring that Blood does not stagnate again. It also ascends to treat headache and opens stagnation in the upper body.

Modern Research (4 studies)

  • Systematic Review and Meta-Analysis of Tao-Hong Siwu Tang for Primary Dysmenorrhea (2020)
  • Neuroprotection Against Middle Cerebral Artery Occlusion-Induced Cerebral Ischemia in Rats (Preclinical, 2011)
See all research on the formula page

Usage & Safety

How to use this formula and important safety information

Important Medical Disclaimer

The information provided here is for educational purposes only and is not intended as medical advice or to replace consultation with a qualified healthcare professional. This formula is a dietary supplement and has not been evaluated by the FDA. It is not intended to diagnose, treat, cure, or prevent any disease.

Always consult with a qualified healthcare provider, particularly if you are pregnant, nursing, have a medical condition, or are taking other medications. Discontinue use and consult your healthcare provider if you experience any adverse reactions.

Recommended Dosage

Instructions for safe storage and consumption

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Best Time to Take

Traditionally taken warm, twice daily on an empty stomach (morning and evening, 30 minutes before meals), or as directed by a practitioner.

Typical Duration

Commonly prescribed for 1 to 4 weeks depending on severity, often taken cyclically (5 to 10 days around or after menstruation for menstrual disorders). Reassessed each cycle by the practitioner.

Dietary Advice

While taking this formula, favor warm, easily digestible, Blood-nourishing foods such as dark leafy greens, red dates, goji berries, bone broth, and dark-fleshed meats. Avoid cold and raw foods (ice water, raw salads, sashimi) as these can constrict the vessels and counteract the formula's Blood-moving action. Reduce greasy, heavy, or overly rich foods that may impair digestion and generate Dampness, since Shu Di Huang is already a rich, cloying herb. Avoid excessive consumption of sour or astringent foods (vinegar, unripe fruits) which can constrict Blood flow and oppose the formula's dispersing action. A small amount of rice wine may be added during preparation, as classically recommended, to enhance the formula's circulation-promoting effect. Moderate intake of warming spices like ginger is supportive.

Modern Usage

Tao Hong Si Wu Tang is an enhanced version of the well-known formula Si Wu Tang (Four-Substance Decoction). The original Si Wu Tang includes four key herbal ingredients: Rehmanniae Radix (Shu Di Huang), Angelicae Sinensis Radix (Dang Gui), Paeoniae Radix Alba (Bai Shao), and Chuanxiong Rhizoma (Chuan Xiong). By incorporating Carthami Flos (Hong Hua) and Persicae Semen (Tao Ren) into this base, the Tao Hong Si Wu Tang formula is created.

This formula was first mentioned in the classic TCM text "Prescriptions of the Bureau of Taiping People's Welfare Pharmacy," and likely developed during the Song dynasty (960-1127 AD).

Tao Hong Si Wu Tang is traditionally used in TCM to invigorate and harmonize the Blood, dispel Blood Stasis, and alleviate pain. TCM practitioners often recommend this formula for conditions such as irregular menstruation, menstrual pain, and some postpartum disorders involving abdominal pain. It is especially effective for pains that have a fixed location and are stabbing in nature, indicative of blood stasis.

Special Populations

Pregnancy

Contraindicated during pregnancy. Tao Ren (Peach Kernel) and Hong Hua (Safflower) are well-established Blood-moving herbs with documented uterotonic properties. Both can stimulate uterine smooth muscle contractions, posing a significant risk of miscarriage, especially in the first trimester. Hong Hua has been historically noted as a potential abortifacient when used in larger doses. Dang Gui (Chinese Angelica) also has mild uterine-stimulating activity. The entire formula is designed to move and break up stagnant Blood, an action directly opposed to the body's need to contain and nourish Blood during pregnancy. This formula should be strictly avoided throughout all stages of pregnancy unless specifically directed by a qualified practitioner for a particular post-delivery application.

Breastfeeding

Use with caution during breastfeeding. Dang Gui and Chuan Xiong contain volatile aromatic compounds that may transfer into breast milk in small amounts, though significant adverse effects on nursing infants have not been well documented. The formula's Blood-moving properties are generally considered less concerning postpartum than during pregnancy, and modified versions are sometimes used to help clear postpartum lochia. However, prolonged use may theoretically reduce breast milk production by diverting Blood circulation away from milk generation. Practitioners typically recommend short-term use under supervision and monitoring of both maternal bleeding and infant feeding tolerance. Not recommended for mothers with heavy postpartum bleeding.

Pediatric Use

Tao Hong Si Wu Tang is not commonly prescribed for children and should be used with great caution in pediatric populations. The Blood-moving herbs Tao Ren and Hong Hua are potent and generally unnecessary for young children, whose Blood stasis conditions are far less common than in adults. If prescribed for older adolescents (typically post-menarche girls with dysmenorrhea or Blood stasis patterns), dosages should be reduced to approximately one-third to one-half of adult doses depending on age and body weight. The formula is generally not suitable for children under 12 years of age. For adolescents, short treatment courses (3 to 7 days per menstrual cycle) are preferred, and a qualified practitioner should closely supervise the treatment. One commercial supplier specifically notes the formula is not suitable for individuals under 18.

Drug Interactions

Anticoagulants and Antiplatelet Drugs: Tao Ren (Peach Kernel), Hong Hua (Safflower), Dang Gui (Chinese Angelica), and Chuan Xiong (Szechuan Lovage) all have documented antiplatelet and blood-flow-promoting properties. Pharmacological studies show that Dang Gui's active compound ferulic acid inhibits platelet adhesion and aggregation, while Tao Ren extract reduces whole blood viscosity. Concurrent use with warfarin, heparin, aspirin, clopidogrel, or other anticoagulants/antiplatelets may synergistically enhance anticoagulant effects, increasing the risk of bruising, subcutaneous petechiae, gum bleeding, or more serious hemorrhage. INR should be monitored closely if combined use is unavoidable.

Hormone Therapies and Oral Contraceptives: The formula's action on Blood circulation and its traditional use in regulating menstruation suggests potential interactions with hormonal medications. One clinical trial studied the combination of TST with oral contraceptives and found additive benefit, but this combination should only be used under professional guidance.

NSAIDs: Since the formula and NSAIDs share some overlapping mechanisms (anti-inflammatory, pain-relieving), combined use may be acceptable in some cases but could theoretically increase gastrointestinal side effects. Monitor for any signs of digestive discomfort.

Contraindications

Avoid

Pregnancy. Tao Ren (Peach Kernel) and Hong Hua (Safflower) are potent Blood-moving herbs that can stimulate uterine contractions and risk miscarriage.

Avoid

Active heavy menstrual bleeding or hemorrhagic conditions. The formula's Blood-moving action may worsen uncontrolled bleeding.

Caution

Menstrual disorders caused primarily by Qi and Blood Deficiency without significant stasis. The Blood-moving herbs may further deplete an already weak constitution.

Caution

Individuals with Spleen deficiency and preexisting Dampness. The rich, cloying nature of Shu Di Huang (Prepared Rehmannia) may impair digestion and generate more Dampness.

Caution

People with Heat constitution or Yin Deficiency with Empty Fire. The warming, tonifying herbs (Shu Di Huang, Dang Gui) may aggravate Heat symptoms such as dry mouth, restlessness, or flushing.

Caution

Concurrent use with anticoagulant or antiplatelet medications (e.g. warfarin, aspirin, clopidogrel). The formula's Blood-activating properties may amplify bleeding risk.

Caution

Perioperative period or recent trauma with open wounds. Blood-moving herbs may delay hemostasis and impair wound healing.

Cautions & Warnings

Although this formula is typically safe for most individuals, it may cause side effects in some people. Pregnant women, nursing mothers, postpartum women, and those with liver disease should use the formula with caution.

As with any Chinese herbal remedy, it is advisable to seek guidance from a qualified TCM practitioner before beginning treatment.

Product Details

Manufacturing, supplier, and product specifications

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Granules

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