Hemp seeds (Huo Ma Ren) Peach kernels (Tao Ren) Dong quai (Dang Gui) Unprepared Rehmannia (Di Huang)

Chinese: 润肠丸

Pinyin: Rùn Cháng Wán

Other names: Moisten the Intestines Pill from Master Shen's Book

Number of ingredients: 5 herbs

Formula category: Formulas that moisten Intestines and unblock bowels

Conditions for which it may be prescribed: ConstipationLong-standing constipation

  1. Moistens the Intestines
  2. Unblocks the bowels

Source date: 1773 AB

Source book: Shen's Book for Revering Life

Run Chang Wan is a 5-ingredient Chinese Medicine formula with Hemp Seeds (Huo Ma Ren) and Peach Kernels (Tao Ren) as principal ingredients.

Invented in 1773 AB, it belongs to the category of formulas that moisten Intestines and unblock bowels. Its main actions are: 1) moistens the Intestines and 2) unblocks the bowels.

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.

From a Western Medicine standpoint, such patterns can give rise to a range of conditions such as constipation or long-standing constipation for instance.

On this page, after a detailed description of each of the five ingredients in Run Chang Wan, we review the patterns and conditions that Run Chang Wan helps treat.

The five ingredients in Run Chang Wan

Huo Ma Ren is a king ingredient in Run Chang Wan. Like the name indicates, it means it has more power than other ingredients in the formula.

1. Hemp Seeds (Huo Ma Ren)

Part used: Dried ripe fruit

Nature: Neutral

Taste(s): Sweet

Meridian affinity: Large intestineSpleenStomach

Category: Laxative herbs that drain downward

Huo Ma Ren contains a high concentration of oils that moisturize the Intestines and unclog the guts. Hemp seeds along with peach kernels help in situations of constipation caused by Yin Deficiency.

Learn more about Hemp Seeds (Huo Ma Ren)

Tao Ren is a king ingredient in Run Chang Wan. Like the name indicates, it means it has more power than other ingredients in the formula.

2. Peach Kernels (Tao Ren)

Part used: Dried ripe seed

Nature: Neutral

Taste(s): BitterSweet

Meridian affinity: HeartLarge intestineLiver

Category: Herbs that invigorate the Blood

Tao Ren contains a high concentration of oils that moisturize the Intestines and unclog the guts. Hemp seeds along with peach kernels help in situations of constipation caused by Yin Deficiency.

Learn more about Peach Kernels (Tao Ren)

Dang Gui is a deputy ingredient in Run Chang Wan. This means it helps the king ingredient(s) treat the main pattern or it serves to treat a coexisting pattern.

3. Dong Quai (Dang Gui)

Part used: Dried root

Nature: Warm

Taste(s): PungentSweet

Meridian affinity: HeartLiverSpleen

Category: Tonic herbs for Blood Deficiency

In general Dang Gui's main actions are as follows: "Tonifies the Blood. Lubricates the Intestines. Relieve constipation. Promotes circulation and dispels Bi Pain. Reduce Dysmenorrhea and help with irregular menstruation."

In the context of Run Chang Wan, it is used because it nourishes the Blood and helps in moistening the desiccated Intestines.

Learn more about Dong Quai (Dang Gui)

Di Huang is an assistant ingredient in Run Chang Wan. This means that it either serves to reinforces the effect of other ingredients or it moderates their toxicity.

4. Unprepared Rehmannia (Di Huang)

Part used: Prepared dried root tuber

Nature: Cold

Taste(s): Sweet

Meridian affinity: HeartKidneyLiver

Category: Herbs that cool the Blood

In general Di Huang's main actions are as follows: "Expels Heat by Cooling Blood. Tonifies Yin by promoting Fluid production. Soothes the Heart by calming Blazing Fire. Cools and nourishes."

In the context of Run Chang Wan, it is used because it nourishes the Yin which is the root of this condition.

Learn more about Unprepared Rehmannia (Di Huang)

Zhi Ke is an assistant ingredient in Run Chang Wan. This means that it either serves to reinforces the effect of other ingredients or it moderates their toxicity.

5. Bitter Oranges (Zhi Ke)

Part used: Dried ripe fruit

Nature: Warm

Taste(s): BitterPungentSour

Meridian affinity: SpleenStomach

Category: Herbs that regulate Qi

Zhi Ke reinforces the laxative effect of the formula thanks to its ability to moves Qi.  It also prevents the other herbs cloying nature from injuring the Spleen and Stomach.

Learn more about Bitter Oranges (Zhi Ke)

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