Prepared rehmannia (Shu Di Huang) Tortoise plastrons (Gui Ban) Phellodendron bark (Huang Bo) Anemarrhena rhizomes (Zhi Mu)

Da Bu Yin Wan

Chinese: 大补阴丸

Pinyin: Dà Bǔ Yīn Wán

Other names: Great Tonifying the Yin Pill

Number of ingredients: 4 herbs

Formula category: Formulas that nourish Yin and tonify

Conditions for which it may be prescribed: TuberculosisHyperthyroidBronchiectasis and two other conditions

  1. Enriches the Yin
  2. Directs fire downward

Contraindications: Use with caution in patients with poor appetite and loose stools. It is... Use with caution in patients with poor appetite and loose stools. It is contraindicated in cases of Fire from Excess. see more

Source date: 1481 AD

Source book: Essential Teachings of [Zhu] Dan-Xi

Da Bu Yin Wan is a 4-ingredient Chinese Medicine formula with Prepared Rehmannia (Shu Di huang) and Tortoise Plastrons (Gui Ban) as principal ingredients.

Invented in 1481 AD, it belongs to the category of formulas that nourish Yin and tonify. Its main actions are: 1) enriches the Yin and 2) directs fire downward.

In Chinese Medicine health conditions are thought to arise due to "disharmonies" in the body as a system. These disharmonies are called "patterns" and the very purpose of herbal formulas is to fight them in order to restore the body's harmony.

In this case Da Bu Yin Wan is used by TCM practitioners to fight patterns like Collapse of Yin. From a Western Medicine standpoint, such patterns can give rise to a range of conditions such as tuberculosis, bronchiectasis or diabetes mellitus for instance.

On this page, after a detailed description of each of the four ingredients in Da Bu Yin Wan, we review the patterns and conditions that Da Bu Yin Wan helps treat.

The four ingredients in Da Bu Yin Wan

Shu Di huang is a king ingredient in Da Bu Yin Wan. Like the name indicates, it means it has more power than other ingredients in the formula.

1. Prepared Rehmannia (Shu Di huang)

Part used: Prepared dried root tuber

Nature: Warm

Taste(s): Sweet

Meridian affinity: KidneyLiver

Category: Tonic herbs for Blood Deficiency

In general Shu Di huang's main actions are as follows: "Tonifies the Blood. Tonifies the Yin of the Kidneys."

In the context of Da Bu Yin Wan, it is used because it is a very effective herb for enriching and tonifying the Liver and Kidneys.

Learn more about Prepared Rehmannia (Shu Di huang)

Gui Ban is a king ingredient in Da Bu Yin Wan. Like the name indicates, it means it has more power than other ingredients in the formula.

2. Tortoise Plastrons (Gui Ban)

Part used: Carapace and plastron

Nature: Cool

Taste(s): SaltySweet

Meridian affinity: HeartKidneyLiver

Category: Tonic herbs for Yin Deficiency

In general Gui Ban's main actions are as follows: "Nourishes the Yin and holds down the Yang. Strengthens the Kidneys and strengthens the bones. Cools the Blood, stops uterine bleeding. Nourishes the Heart. Promotes Healing."

In the context of Da Bu Yin Wan, it is used because it nourishes the Yin and weighs down the floating Yang Fire.

Learn more about Tortoise Plastrons (Gui Ban)

Huang Bo is a deputy ingredient in Da Bu Yin Wan. This means it helps the king ingredient(s) treat the main pattern or it serves to treat a coexisting pattern.

3. Phellodendron Bark (Huang Bo)

Part used: Dried bark

Nature: Cold

Taste(s): Bitter

Meridian affinity: BladderKidneyLarge intestine

Category: Herbs that clear Heat and dry Dampness

In general Huang Bo's main actions are as follows: "Expels Damp-Heat in the Lower Burner. Clears Kidney Yin Deficient Heat. Applied externally or toxic Fire, especially associated with Dampness."

In the context of Da Bu Yin Wan, it is used because it quells Kidney Fire.

Learn more about Phellodendron Bark (Huang Bo)

Zhi Mu is a deputy ingredient in Da Bu Yin Wan. This means it helps the king ingredient(s) treat the main pattern or it serves to treat a coexisting pattern.

4. Anemarrhena Rhizomes (Zhi Mu)

Part used: Dried rhizome

Nature: Cold

Taste(s): BitterSweet

Meridian affinity: StomachKidneyLung

Category: Herbs that clear Heat and purge Fire and/or clear Summer Heat

In general Zhi Mu's main actions are as follows: "Clears Heat and Fire from the Qi level. Clears Heat and Fire from the Lung and Stomach. Clears Heat and tonifies the Yin."

In the context of Da Bu Yin Wan, it is used because it clears Heat, enriches the Lungs, and generates Fluids.

Learn more about Anemarrhena Rhizomes (Zhi Mu)

Da Bu Yin Wan is used to treat Collapse of Yin

It's important to remember that herbal formulas are meant to treat patterns, not "diseases" as understood in Western Medicine. According to Chinese Medicine patterns, which are disruptions to the body as a system, are the underlying root cause for diseases and conditions.

As such Da Bu Yin Wan is mostly used to treat the pattern "Collapse of Yin" which we describe below.

But before we delve into Collapse of Yin here is an overview of the Western conditions it is commonly associated with:

Tuberculosis Bronchiectasis Diabetes mellitus Hyperthyroid Nervous exhaustion

Again it wouldn't be correct to say "Da Bu Yin Wan treats tuberculosis" for instance. Rather, Da Bu Yin Wan is used to treat Collapse of Yin, which is sometimes the root cause behind tuberculosis.

Now let's look at Collapse of Yin, a pattern that TCM practitioners commonly treat with Da Bu Yin Wan.

'Yin' as a body pattern in Chinese Medicine is one of the so-called "Eight Principles". Learn more about Yin in Chinese Medicine

Collapse of Yin

Da Bu Yin Wan is sometimes prescribed by TCM practitioners to treat Collapse of Yin. This pattern leads to symptoms such as low-grade fever, night sweats, restlnessness and dry mouth with desire to sip liquids. Patients with Collapse of Yin typically exhibit rapid (Shu) or fine (Xi) pulses.

This is one of the five patterns of the Blood level, the fourth and last level of the Four Levels theory. This means this is a very serious pattern where an External Pathogen has penetrated deeply within the body.

Collapse of Yin indicates an extremely severe state of Emptiness. It also implies a... read more about Collapse of Yin

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