San Ren Wan
Star三仁丸 (Three-Seed Pill)
Source: Fine Formulas of Wonderful Efficacy (1470)
Last updated October 1, 2026
Description
San Ren Wan (Three-Seed Pill), from Fine Formulas of Wonderful Efficacy (1470).
Associated formula of Wu Ren Wan.
Actions: Moistens the intestines; Unblocks the stool
Usage: Constipation from heat injuring Intestinal fluids, with tenesmus.
Category: Formulas that Moisten the Intestines and Unblock the Bowels.
Source: Scheid V, Bensky D, Ellis A, Barolet R. Chinese Herbal Medicine: Formulas & Strategies, 2nd ed. Eastland Press, 2009, p. 79.
Composition
| Herb | Amount | % | Role | Function |
|---|---|---|---|---|
|
Bai Zi Ren
as printed: Platycladi Semen (bai zi ren) 30g
|
30g | 33.33% | — | |
|
Song Zi Ren
as printed: Pini Semen (song zi ren) 30g
|
30g | 33.33% | — | |
|
Huo Ma Ren
as printed: Cannabis Semen (huo ma ren) 30g
|
30g | 33.33% | — |
Energetics dose-weighted
The formula's overall nature, taste balance and channel reach, weighted by each herb's dose. Classical formulas often pair warm and cool herbs on purpose, so a net figure summarises the mix — it doesn't describe every herb in it.
Nature
Net slightly warm (+0.33)
From 100% of the weighed grams.
Grams by band: neutral 67%, warm 33%.
Taste
- sweet 100%
From 100% of the weighed grams.
Channels reached
- Large intestine 100%
- Lung 33%
- Stomach 33%
- Spleen 33%
- Heart 33%
- Kidney 33%
Share of the grams entering each channel, from 100% of the weighed grams.
Dose-weighted from each herb's recorded nature, taste and channels (missing values are left out, never counted as neutral). It describes the composition — it is not a recommendation.
Preparation
Equal amounts powdered and made into pills with yellow beeswax.
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Formula Network
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Similar Formulas by composition
Match score combines dosage-weighted composition (cosine, 70%) with shared-herb overlap (Jaccard, 30%).
Traditional formula information is for educational purposes only. Herbal formulas should be prescribed by a qualified practitioner — dosages and combinations are individualized and can interact with medications.
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