Er Zhi Wan
Star二至丸 (Two-Ultimate Pill)
Source: Yi Fang Ji Jie (1534)
Last updated October 1, 2026
Description
Er Zhi Wan (Two-Ultimate Pill), from the Yi Fang Ji Jie, is used to nourish Liver- and Kidney-Yin.
Presentation: dizziness; tinnitus; blurred vision; dream-disturbed sleep; dry mouth and throat; weakness of the back and knees; premature gray hair.
Syndrome: Syndrome of Kidney-Yin deficiency.
Composition strategy:
- Suited to Yin deficiency with slight heat at the Yin or blood level
- Non-cloying, gentle and steady; usable long term in chronic disease
- Often added to other formulas to tonify Kidney- and Liver-Yin without side effects
Source: Yang Y. Chinese Herbal Formulas: Treatment Principles and Composition Strategies. Churchill Livingstone Elsevier, 2010, p. 174.
Composition
| Herb | Amount | % | Role | Function |
|---|---|---|---|---|
|
Nu Zhen Zi
as printed: Nu Zhen Zi (Ligustri lucidi fructus)
|
9g | 50% | nourish Yin fluid of Kidney and Liver | |
|
Mo Han Lian (Cao)
as printed: Han Lian Cao (Ecliptae herba)
|
9g | 50% | clear heat, cool blood, stop bleeding, nourish Yin fluid |
Dui Yao — Core Herb Pairs
The classical two-herb combinations at the heart of this formula, as recorded on the herbs' own pages — each pair has an action neither herb has alone.
Liver and kidney yin are nourished while blood is cooled and bleeding stopped, gently and without cloying.
Premature greying, dizziness and bleeding from yin deficiency.
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 cool (-1.00)
From 100% of the weighed grams.
Grams by band: cool 100%.
Taste
- sweet 50%
- sour 25%
- bitter 25%
From 100% of the weighed grams.
Channels reached
- Kidney 100%
- Liver 100%
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
pill
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Formula Network
Formulas that share herbs with this one — the closer to the centre, the stronger the match. Click a node to explore.
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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