Shi Xiao San
Classical TCM Formula Profile
Part of the HJMEDICAL TCM Discovery Center
失笑散 · Shī Xiào Sàn
A classical focused pair for stabbing pain from blood stasis in the chest or lower abdomen.
Read the complete guide →Quick Facts
- Formula Category
- Blood-Invigorating Formulas
- Primary Pattern
- Blood Stasis
- Primary Function
- Invigorate blood, transform stasis, stop pain
- Primary Therapeutic Principle
- Move blood stasis and relieve stabbing pain
- Classical Source
- Classical TCM formulary
- Available as Granules
- Yes
Formula Overview
A classical focused pair for stabbing pain from blood stasis in the chest or lower abdomen.
Therapeutic Principle
Traditionally selected for stabbing fixed pain from blood stasis in the chest or lower abdomen, when a simple, focused blood-invigorating pair is preferred over broader Qi-moving or warming formulas.
Composition: Sovereign, Minister, Assistant, Envoy
Every herb in the formula, grouped by the job it does in the classical hierarchy.
君SovereignTreats the main pattern
蒲黃Pu Huang9g
Cattail Pollen- sweet in taste and moderate in nature
- dissolves blood stasis
- stanches bleeding when it is fried
五靈脂Wu Ling Zhi9g
Flying Squirrel Feces- bitter
- salty
- and sweet in taste
- warm in nature
- reaches the blood level of the liver channel effective at dredging the blood vessels
- dissipates blood stasis and relieves pain
Classical Composition
- Faeces Trogopterori (Wu Ling Zhi) 2 qian (6g)
- Typhae Pollen (Pu Huang) 2 qian (6g)
Dosages follow the classical source and are shown for study, not as a prescription.
Related Conditions
Related Health Topics
Actions
- Invigorates blood and dissolves stasis
- dissipates masses and relieves pain.
Indications
- Shi Xiao San is indicated for pain due to blood stasis such as stabbing pain in the chest and abdomen, inhibited lochia, irregular menstruation, and acute pain in the lower abdomen.
Traditional Pathogenesis
Cause & mechanism
- The varieties of pains that are addressed by this formula are all caused by blood stasis obstructing the blood vessels.
- Stabbing pain of the chest and abdomen, and acute pain in the lower abdomen are due to poor blood circulation from obstructed blood vessels.
- Irregular menstruation and inhibited lochia are caused by stasis blocking the uterus.
Treatment strategy
- The treatment method is to invigorate blood, dissolve stasis, dissipate masses, and relieve pain.
How does this formula compare?
Clinical Perspective
Shi Xiao San, Jin Ling Zi San, Shao Fu Zhu Yu Tang and Xue Fu Zhu Yu Tang all address pain from stasis. Jin Ling Zi San spreads Liver Qi with mild blood-moving for constrained pain; Shao Fu Zhu Yu Tang warms and moves lower-abdominal stasis; Xue Fu Zhu Yu Tang moves blood in the chest. Shi Xiao San is a focused two-herb pair for stabbing pain from blood stasis.
Clinical Differentiation
- Shi Xiao San is a basic formula for treating pain patterns caused by blood stasis.
- It is most suitable for blood stasis of the liver channel.
- This clinical pattern is marked by stabbing pain of the chest and abdomen, menstrual irregularities, acute pain of lower abdomen.
Safety notes: This formula invigorates blood. It is not appropriate in pregnancy or for deficiency pain without stasis.
For educational reference only, based on traditional pattern differentiation — not a substitute for professional advice.
Frequently Asked Questions
What are the actions of Shi Xiao San?
Shi Xiao San has the actions of invigorating Blood, dispelling Blood stasis, and stopping pain. It is a simple yet potent formula for fixed, stabbing pain caused by Blood stasis, and its name “Sudden Smile” reflects the rapid relief of pain that often follows its use.
Which modern diseases is Shi Xiao San suited to?
Modern TCM clinical practice commonly applies it to individuals whose pattern differentiation falls within Blood stasis, including dysmenorrhea with dark clots, endometriosis or adenomyosis pain of stasis type, postpartum abdominal pain from retained lochia, irregular menstruation with clotting, and certain cases of chest or epigastric stabbing pain due to Blood stasis.
Is Shi Xiao San suitable for improving fixed stabbing pain in the lower abdomen or chest?
For presentations of fixed, stabbing pain in the lower abdomen or chest, dysmenorrhea with dark menstrual blood and clots, postpartum pain with retained lochia, a dark or purplish tongue possibly with stasis spots, and a choppy or wiry pulse — in those whose pattern differentiation confirms Blood stasis — TCM commonly applies Shi Xiao San as an adjunct. It cannot replace standard medical evaluation of pain or abnormal bleeding.
Related Products
Hoi Tin Shi Xiao San (Sudden Smile Powder) 5:1 Concentrated Granules
Nong's Shi Xiao San (Sudden Smile Powder) 5:1 Concentrated Granules
Related Articles
Shi Xiao San: Classic TCM Formula for Blood Stasis, Menstrual Pain & Fixed Abdominal Pain
Jin Ling Zi San: Classic TCM Formula for Liver Qi Stagnation, Rib-Side Pain & Intermittent Pain
Xue Fu Zhu Yu Tang: Classic TCM Formula for Blood Stasis, Chest Pain & Headache
Shao Fu Zhu Yu Tang: Classic TCM Formula for Lower Abdominal Blood Stasis & Menstrual Pain
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Medical Disclaimer
For general TCM education only — not medical advice. Consult a qualified TCM practitioner or licensed healthcare provider before use, especially if pregnant, nursing, on medication, or managing a chronic condition.