Fruits and seedsPurgativePruni Semen

Yu Li Ren (Dwarf Flowering Cherry Seed)

A practical guide to Yu Li Ren: what it is, how Traditional Chinese Medicine uses it, the classical formulas it appears in, and who should be careful with it.

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Last reviewed Oct 29, 2026

Quick Facts

Latin NamePruni Semen
Chinese Name & Pinyin 郁李仁 · Yu Li Ren
Medicinal PartFruits and seeds
The itemYu Li Ren is the dried ripe seed of Prunus humilis, Prunus japonica, or the long-stalk almond. Huo Ma Ren (hemp seed) is a near cousin, not this herb. It usually goes into decoctions or ground powder.
Nature and channelsNeutral. Acrid, bitter, sweet. Enters the Spleen, Large Intestine, and Small Intestine. Neutral acrid bitter sweet moistens the intestines, descends qi, and promotes water.
Pharmacopoeia lineMoistens the intestines and frees the bowels, sends qi down and promotes water. Traditionally used for dry bowel constipation, abdominal fullness with edema, and scanty urine.
Pattern cuesDry hard stools. Dry mouth and throat. Limb edema. Abdominal fullness. Scanty urine.
In this articleYu Li Ren versus Huo Ma Ren. Lubricating the bowels versus also draining water. Why it is not for long daily use. Why pregnancy must skip it. Why persistent abdominal pain needs a clinic. Who should skip it.

What Is Yu Li Ren?

Yu Li Ren (郁李仁; Yù Lǐ Rén; Latin: Pruni Semen; English: bush cherry seed) in the current pharmacopoeia is the dried ripe seed of Prunus humilis, Prunus japonica, or the long-stalk almond of the Rosaceae family — small oval seeds, yellow-white to light brown, oily inside — harvested in late summer to early autumn after the fruit ripens, with the flesh and shell removed and the seed sun-dried, usually used raw, with a stir-fried version also on the market. It is neutral, acrid, bitter, and sweet, enters the Spleen, Large Intestine, and Small Intestine channels, and its core actions are to moisten the intestines and free the bowels, and to send qi down and promote water metabolism. It usually goes into decoctions, or is ground to a fine powder. The usual amount is 3–10 g. It needs no pre-decocting, late addition, or wrapped boiling — simmered in a small herb bag, or stirred into warm water as a powder. As a home cup, a small powder of it with a spoonful of honey suits a short, occasional dry-bowel spell.

It is not Huo Ma Ren. Huo Ma Ren (Hemp Seed) is warm and sweet, leaning to nourishing moistening for simple dry constipation with no water retention; this bush cherry seed is neutral, acrid, bitter, and sweet, descending and draining, and also promotes water. Spleen-stomach deficiency-cold, with loose stool and frequent diarrhea, is a poor match. Use caution in pregnancy and breastfeeding. Long-term edema from kidney deficiency, or qi-sinking prolapse, needs a clinic first. Persistent abdominal pain or vomiting after use needs a clinic first. Anyone allergic to Rosaceae plants should skip it. Do not keep taking it daily for more than about a week.

It is used most often for three patterns:

  • Fluid-depletion dry intestines — dry hard stools, difficult passage, dry mouth and throat, mild bloating
  • Damp-water stagnation — limb edema, abdominal fullness, scanty urine, thick greasy tongue coat
  • Constipation with qi stagnation — bowel blockage with chest stuffiness and a faint cough

Acrid, bitter, sweet, and neutral, it is not a daily “bowel lubricant” to keep taking. A draining herb with no dry stagnation present damages the spleen and brings loose stool.

When fluids fail to moisten the intestines, or damp-water stagnates with qi failing to descend, dry hard stools, edema, and scanty urine are common. Yu Li Ren is neutral, acrid, bitter, and sweet. It moistens the intestines, descends qi, and promotes water, which is why it appears in Wu Ren Wan (Five Seeds Pill)–type formulas. It drains more than it tonifies. A deficiency-cold spleen and stomach, with loose stool and no stagnation, get worse if more is added.

Yu Li Ren is not a catch-all daily bowel lubricant. In spleen-stomach deficiency-cold, with loose stool, or in pregnancy, taking it alone is a poor match. Raw or stir-fried, and whether it belongs in a formula, should be decided by a licensed Chinese medicine practitioner after pattern diagnosis.

Yu Li Ren

Yu Li Ren: Materia Medica Profile

Identification & Quality Standard

Pruni Semen

Botanical Origin

The dried mature seed of Prunus humilis Bge., Prunus japonica Thunb., Prunus pedunculata Maxim.(Rosaceae).

Production Regions

Primarily produced in the areas of northeast of China, and Hebei, Shandong.

Quality Requirements

Superior medicinal material has full kernels, intact, pale yellowish-white, and does not seep oil.

Macroscopic Features

Prunus humilis Bge.: Drupe is sub-spherical, dark red, about 1cm diameter, externally smooth. Prunus japonica Thunb.: Drupe is sub-spherical when mature, red or purplish-red, 1.5~1.8cm diameter; externally has ridge on two sides of back surface, no ridges at other side. Prunus pedunculata Maxim.: Seed is oval, 6~10mm long, 5~7mm diameter. Externally yellowish-white to pale brown, one pointed end, another end is blunt round. Pointed end has linear hilum at one side; round end had dark chalaza at center, numerous longitudinal vascular bundle lines from chalaza upwards. Thin seed coat, cotyledon is milky-white, oily, slightly bitter taste.

Main Regions and Quality Identification

Traditional materia medica and industry experience value the northern producing regions — Hebei, Liaoning, Inner Mongolia, and nearby — though actual quality also depends on variety, harvest time, processing, and storage. In appearance, genuine Yu Li Ren is oval, about 5–8 mm long and 3–5 mm wide, with a yellow-white or light brown surface; one end is pointed and the other bluntly round, with a light-colored hilum at the pointed end and a chalazal point at the round end, plus faint vein lines in between. It is hard; broken open, it shows white oily cotyledons, with a faint odor and a slightly bitter taste. The difference between raw and stir-fried forms: Chao Yu Li Ren is darker on the surface, with a scorched aroma and a more crisp texture. Common look-alikes are seeds of different plants in the same family — distinguish them carefully.

Traditional Properties & Historical Lineage

Nature, Flavour & Channel Tropism

Acrid, Bitter, Sweet; NeutralSpleenLarge IntestineSmall Intestine

1. Records in Classic Materia Medica

  • Shen Nong Ben Cao Jing: "treats great abdominal swelling with edema of the face and limbs, and promotes the passage of water" — making its water-promoting action clear.
  • Ming Yi Bie Lu: adds that it "treats accumulated heat in the intestines and stomach, undigested old food, and promotes the water passage" — extending to intestinal and gastric stagnation.
  • Xin Xiu Ben Cao: notes it "treats sudden heart pain and diaphragm qi" — touching on chest-diaphragm qi obstruction.
  • Ben Cao Gang Mu: clarifies — "Yu Li Ren is sweet-bitter and moist, and its nature descends; therefore it can send the qi down and promote water" — summarizing its settling nature.
  • De Pei Ben Cao: records the pairing ideas — "with ginger juice, treats dry intestines; with Hua Shi (talcum), treats edema."
  • Zhong Hua Ben Cao: systematically organizes its actions of moistening the intestines, freeing the bowels, sending the qi down, and promoting water, and defines the suitable pattern scope.

2. How Views of Its Nature Changed

Different physicians saw it differently. Some stressed its clearing-draining side — that it frees both bowel and urine, suiting heavy damp and stagnation. A few once confused it with tonics and thought it had some tonifying effect, but most physicians emphasized that it drains and frees by nature and is not for long-term heavy use. Others defined its scope — that it suits qi stagnation and fluid depletion without obvious deficiency-cold, and should not be used alone for spleen-stomach cold with loose stools. These differing emphases make its application more targeted and keep it from being used blindly.

Yu Li Ren

Core Efficacies & Traditional Applications

Traditional Functions

Moistens the intestines and frees stools, and descends qi and promotes diuresis.

1. First Direction: Moistening the Dry Intestines and Freeing the Bowels

  • Traditional action: moisten the intestines and move the qi, easing the difficulty of passing stools that fluid depletion and qi stagnation bring.
  • Typical signs: dry, hard stools that are hard to pass, possibly with a dry mouth and throat and bloating — and a face without marked deficiency-cold signs.
  • Usual combinations: often paired with Bai Zi Ren and Xing Ren to strengthen the moistening, or with Zhi Shi and Hou Po to strengthen the sending-down, pushing action — adjusted to the specific pattern.
  • Who should not self-use: those with loose stools and frequent diarrhea from spleen-stomach cold, and pregnant or breastfeeding women, should not self-use — a practitioner's pattern diagnosis is needed first.

2. Second Direction: Sending the Qi Down and Promoting Water

  • Traditional action: descend the qi and free the water passage, expelling the damp that has stagnated in the body.
  • Typical signs: limb edema, abdominal fullness, scanty urine, possibly with chest tightness, poor appetite, and a thick greasy tongue coat.
  • Usual combinations: often paired with Fu Ling and Ze Xie to strengthen the water-promoting effect, or with Chen Pi and Da Fu Pi to move the qi and relieve fullness — adjusted according to where the damp has stagnated.
  • Who should not self-use: those with long-term edema and clear, copious urine from kidney deficiency, and those with qi sinking causing prolapse (hemorrhoids, uterine prolapse), should not self-use — a practitioner's pattern diagnosis is needed first.

3. Classic Pairing: Yu Li Ren With Xing Ren

The classic herb pair is Yu Li Ren with Xing Ren. Yu Li Ren is pungent-bitter-sweet and neutral, mainly descending-draining — good at lubricating the bowels, sending the qi down, and promoting water; Xing Ren is bitter and warm, mainly diffusing and descending lung qi — good at moistening the bowels, stopping cough, and calming wheezing. Together, one diffuses and one descends — the lung qi and intestinal qi are regulated at once, strengthening the bowel-moistening effect while using the lung qi to assist the transport of damp. It suits fluid-depletion dry intestines with the lung qi not diffused — constipation together with a mild cough or chest tightness. This pairing needs a practitioner's pattern diagnosis; don't combine herbs on your own.

Yu Li Ren

Modern Research

Modern research offers useful context, but Traditional Chinese Medicine prescribes on whole-pattern diagnosis rather than isolated compounds.

1. Main Chemical Constituents

Detected constituents include oils and fats, flavonoids, saponins, and phenolic acids, with the oil content notably high — one of the main active groups. In vitro tests show the extract stimulates intestinal smooth muscle and promotes intestinal peristalsis. In animal studies, after giving the extract to constipation-model mice by gavage, defecation time shortened and fecal output increased. Human clinical research currently centers on its effect on intestinal function — more human studies are still needed to verify the specific clinical effects and safe doses.

2. Current Research Directions

Current work mainly follows three directions:

  • Effect on intestinal motility — exploring the mechanism behind promoting defecation.
  • Effect on water-salt metabolism — studying the potential basis of its fluid-reducing, swelling-relieving action.
  • Safety evaluation of the extract — observing responses at different doses.

Studies suggest the oil components may promote peristalsis by lubricating the intestine and stimulating the intestinal wall; some flavonoids showed possible anti-inflammatory activity in tests, but how this connects to the traditional actions still needs more research.

3. Limitations of Current Research

  • Lab results are not clinical efficacy — the responses seen in vitro and in animals may differ in people because of individual variation and different intestinal environments.
  • Extracts and monomers are not the same as traditional decoction pieces — the extracts and single components used in research are different dose forms from the traditionally used slices; they cannot be converted directly.
  • Methods and doses vary between studies — differences in dose and preparation lead to differing results that are hard to unify into one conclusion.
  • A single component does not define the whole herb — Chinese herbs work through many components together; one component's activity cannot represent the whole herb's effect.

Yu Li Ren

Comparing Similar Herbs

1. What They Share

Yu Li Ren and Huo Ma Ren share three main points:

  • Both have moistening the intestines and freeing the bowels as a main action — both ease the difficult bowel movements of dry intestines.
  • Both are used for the traditional patterns of fluid depletion with dry intestines and qi stagnation — the constipation types they suit overlap.
  • Both need constitution and dose care — constitutionally cold-deficiency people should not use either long-term or in large amounts, to avoid worsening the cold-deficiency signs.

2. The Key Differences: Yu Li Ren vs. Huo Ma Ren

  • Nature and flavors: Yu Li Ren is neutral with pungent-bitter-sweet flavors, leaning toward settling and draining; Huo Ma Ren is warm with a sweet flavor, leaning toward moistening and nourishing, with a tonifying character.
  • Focus: besides moistening the intestines, Yu Li Ren also sends the qi down and promotes water — good at solving intestinal blockage and damp retention together; Huo Ma Ren mainly moistens the intestines — for simple dry-intestine constipation, without a marked water-promoting action.
  • Qi tendency: Yu Li Ren descends and drains the qi — pushing both the bowel and the water passage downward; Huo Ma Ren nourishes and moistens — assisting qi movement mainly by moistening the intestine, with a weak qi-moving action of its own.
  • Best fit: Yu Li Ren suits constipation accompanied by limb edema and scanty urine; Huo Ma Ren suits simple dry, hard stools with a dry mouth and throat, without obvious damp retention.
  • Not suitable: Yu Li Ren's draining is stronger, so those with spleen-stomach cold and frequent diarrhea are more unsuited; Huo Ma Ren is warm, so those with internal excess heat and frequent dry bitter mouth should be cautious.
  • Use scenes: Yu Li Ren appears in formulas that also need to promote water — such as formulas regulating edema with constipation; Huo Ma Ren appears in bowel-moistening food therapy or light regulation — such as teas for everyday mild constipation.

3. One-Sentence Summary

Simply put, Yu Li Ren leans toward draining and descending — moistening the bowels and promoting water at once, whereas Huo Ma Ren leans toward moistening and tonifying — mainly simple bowel-moistening. Both can be used for the constipation of dry intestines, but they are not interchangeable.

Yu Li Ren

Classical Formulas Containing Yu Li Ren

Classic Formula 1: Wu Ren Wan (Five-Seed Pill)

Combination logic: Yu Li Ren is the minister in Wu Ren Wan, working with Xing Ren, Bai Zi Ren, Tao Ren, and Song Zi Ren as the main bowel-moistening herbs — the lord-minister-assistant-courier structure centers on moistening the bowels, with Chen Pi moving the qi. The formula addresses constipation from fluid depletion, dry intestines, and qi stagnation — usually from insufficient intestinal fluid and poor qi flow. The synergy: Xing Ren descends lung qi, Bai Zi Ren moistens the heart and spleen, Tao Ren breaks stasis and moistens, Song Zi Ren moistens the intestines, and Chen Pi moves the qi. Several herbs together both moisten the intestines and push the qi, preventing pure moistening from causing qi stagnation. The formula does not use Yu Li Ren alone: a single herb's action is narrow and cannot cover qi-moving and the other kinds of moistening — the whole combination works better.

Traditional use: Wu Ren Wan was traditionally used for fluid-depletion constipation — dry, hard stools, difficult passage, a lusterless face, and a dry mouth and throat — suited to long-term chronic constipation, especially fluid-depletion constipation in the elderly or after childbirth.

Modern note: modern clinical use requires a doctor's pattern diagnosis and standard care; do not self-apply just because the formula name relates to a condition. If you have constipation, first identify the cause and let a doctor judge whether this formula fits.

Classic Formula 2: Yu Li Ren San (Bush Cherry Seed Powder)

Combination logic: Yu Li Ren is the lord in Yu Li Ren San, combined mainly with Bing Lang, Qian Niu Zi, Chen Pi, and Mu Xiang. The formula addresses edema and bloating from damp retention with qi not moving — the problems of damp stopping inside, abdominal fullness, and difficult urination. It works with Bing Lang (moving qi and promoting water), Qian Niu Zi (draining water and relieving swelling), and Chen Pi and Mu Xiang (regulating qi and moving stagnation), together sending the qi down and promoting water. The formula does not use Yu Li Ren alone: a single herb's water-promoting effect is limited; combining qi-moving and water-draining herbs strengthens the effect while keeping simple water-draining from disturbing the qi.

Traditional use: Yu Li Ren San was traditionally used for edema, bloating, and difficult urination — suiting the excess pattern of heavy damp stagnation: marked abdominal fullness, severe limb edema, and scanty urine.

Modern note: modern clinical use requires a doctor's pattern diagnosis and standard care — herbs like Qian Niu Zi are strong, so the dose must be strictly controlled; do not self-use this formula.

Formulas vs. Single Herbs

A formula is a whole worked out by many herbs together — each herb has its specific position and role in the combination. A single herb cannot simply replicate a full formula's effect. The formula's doses and combinations are holistic: different herbs' amounts and pairings affect the whole formula's effect and safety. Don't build your own formula from online articles. And the common misunderstanding to note: that a herb works inside a formula does not mean taking it alone will work the same way — the formula's effect comes from many components coordinating, while a single herb's components and actions are relatively narrow.

Diet & Daily Home Use

1. Home Tea

Tea — Yu Li Ren Feng Mi Cha: Chao Yu Li Ren 3 g, Feng Mi 5 g, warm water 200 mL. Grind the stir-fried Yu Li Ren into fine powder, put it in a cup, add warm water, and when the water cools to about 40°C, add the honey and stir. Suited to autumn-winter constipation from dry intestines with mild qi stagnation — dry stools, dry mouth, mild bloating — good for short-term regulation in sedentary office workers or the elderly. Not for: those with spleen-stomach cold and frequent diarrhea, and pregnant or breastfeeding women. Suggested: 2–3 times a week; not for long-term continuous drinking. Reminder: Yu Li Ren is a medicinal decoction piece, not an ordinary food — do not raise the dose at will or take it long-term; it is best to consult a doctor or pharmacist before use.

2. Decoction and Processing Differences

The raw and processed forms differ in that raw Yu Li Ren has a stronger bowel-moistening and water-promoting effect — suiting heavy damp retention; Chao Yu Li Ren (stir-fried) is gentler in nature, with a more prominent bowel-moistening action — suiting simple constipation. At home, Yu Li Ren generally needs no pre-boiling, late addition, or bagging — decoct it directly in a medicine bag, or grind it into powder for flushing with water. Different forms cannot be converted directly — the dose of slices and the dose of ground powder differ; adjust to the way you use it.

3. Dosage and Course

The common dose in traditional prescriptions is 3–10 g, adjusted to the pattern and the patient's constitution. Food-therapy doses are generally kept under 3 g, lower than medicinal doses. Long-term continuous use is not advised: generally no more than 1 week continuously; if symptoms don't improve, consult a doctor. Special groups — children, the elderly, and people with liver or kidney impairment — need strict dose control and should consult a doctor or pharmacist before use.

Yu Li Ren

Contraindications & Safety Warnings

1. Who Should Avoid It

  • Spleen-stomach cold — loose stools and frequent diarrhea.
  • Pregnancy and breastfeeding — the draining action may affect the body's state.
  • Children and the elderly — weaker body function; use cautiously.
  • Liver or kidney impairment — weaker metabolism; may add burden to the body.
  • Allergy to Rosaceae (rose-family) plants — may have an allergic reaction.
  • Those in special treatment — such as anticoagulant or diuretic therapy — consult a doctor before use.

2. Interactions and Diet Notes

Yu Li Ren may interact with anticoagulants, blood-pressure medications, and blood-sugar medications — for example, strengthening the anticoagulant effect and increasing bleeding risk; affecting blood-pressure drugs and causing blood-pressure swings; or affecting the metabolism of blood-sugar drugs and causing abnormal blood sugar. Patients on such drugs should consult a doctor or pharmacist first and not self-use Yu Li Ren. There is no sufficient evidence for a general "food clash" between ordinary foods, but certain herbs can interact with specific drugs — anyone on medication should consult a doctor or pharmacist first.

3. Adverse Reactions and Overdose Risk

Overdose may bring nausea, vomiting, abdominal pain, and diarrhea — gastrointestinal reactions that can become severe enough to cause dehydration; some people may also feel dizzy or have heart palpitations. If marked discomfort, allergy signs, persistent vomiting, breathing difficulty, altered consciousness, or rapidly worsening symptoms appear, stop at once and seek medical care — do not handle it on your own.

Frequently Asked Questions About Yu Li Ren

What is Yu Li Ren? Are Huo Ma Ren and Xing Ren the same?
Yu Li Ren (郁李仁) is the dried mature seed of Prunus humilis, Prunus japonica or Prunus pedunculata (Pruni Semen), a common Chinese herb centered on moistening the intestines and freeing the stool, descending qi and promoting urination. Huo Ma Ren moistens the intestines and frees the stool, leaning to intestinal dryness. Xing Ren stops cough and calms wheezing, leaning to Lung qi. The three cannot be interchanged by equal weight. Write Yu Li Ren. Contraindicated in pregnancy.
What is the composition and traditional use of Yu Li Ren?
Pharmacopoeial name Yu Li Ren, Latin Prunus humilis etc. Acrid, bitter and sweet, neutral; enters the Spleen, Large Intestine and Small Intestine channels. It acts to moisten the intestines and free the stool, descend qi and promote urination. It is used for fluid depletion and intestinal dryness, food stagnation and qi stagnation, abdominal distention and constipation, edema, beriberi and inhibited urination. Moistens the intestines, descends qi and promotes urination.
How do you choose raw versus prepared? Can Huo Ma Ren replace it?
Crushed and used raw or fried. Huo Ma Ren leans to moistening the intestines without specialized descending qi and promoting urination; it cannot replace the formula by equal weight. Commercial products follow regulated processing; do not self-modify.
What is the usual dosage? Can it be drunk daily as a stool-freeing tea?
Decocted, 6-10 g. Modern use requires a practitioner to name the dose. It is not a four-season “bush cherry tea.” Yin deficiency and fluid depletion only injure further. Constipation needs a practitioner to name a short course; it does not replace assessment.
What are the contraindications? Can it be used in pregnancy?
Contraindicated in pregnancy. Use caution in yin deficiency with fluid depletion and Spleen deficiency loose stool. Contains amygdalin; overdose may cause toxicity. Stop and seek care if nausea or respiratory difficulty appears. Severe abdominal pain needs immediate medical care.
Can Yu Li Ren moisten the intestines and free the stool, descend qi and promote urination?
It can help fluid depletion and intestinal dryness with abdominal distention and constipation, edema, beriberi and inhibited urination. It moistens the intestines and frees the stool, descends qi and promotes urination—not a specific for every constipation or every edema.
Can Yu Li Ren be drunk daily as a stool-freeing or urine-promoting tea?
Intestinal dryness and constipation may enter a short formula; yin deficiency and fluid depletion only injure further. “Bush cherry must free the stool” does not replace assessment. Moistening the intestines and freeing the stool, descending qi and promoting urination should be named by a practitioner with form and dose.
How do you choose among Yu Li Ren, Huo Ma Ren, Xing Ren, Tao Ren and Da Huang?
Yu Li Ren moistens the intestines and frees the stool while descending qi and promoting urination, leaning to intestinal dryness with qi stagnation and edema. Huo Ma Ren moistens the intestines and frees the stool, leaning to intestinal dryness. Xing Ren stops cough and calms wheezing, leaning to Lung qi. Tao Ren invigorates blood and moistens the intestines, leaning to blood stasis. Da Huang drains downward and attacks accumulation, leaning to excess heat. Intestinal dryness with qi stagnation favors Yu Li Ren; intestinal dryness favors Huo Ma Ren; Lung qi favors Xing Ren; blood stasis favors Tao Ren; excess heat favors Da Huang. They may be referenced after pattern differentiation; pregnancy forbids Yu Li Ren.
How is Yu Li Ren commonly modified? What is the representative use?
Depends on the pattern. Intestinal dryness may add Huo Ma Ren; edema may add Fu Ling. Write Yu Li Ren; do not replace the descending-qi and urine-promoting action with an equal weight of Huo Ma Ren.
How do you choose and store Yu Li Ren?
Choose regulated Chinese medicinal materials with intact seeds. Moldy, damp, or abnormal-smelling lots are discarded. Store cool and dry. Buy “Yu Li Ren”; do not replace moistening the intestines and freeing the stool, descending qi and promoting urination with an equal weight of Huo Ma Ren or Xing Ren.

Medical Disclaimer — This article is provided for educational purposes only and describes traditional Chinese medicine concepts. It is not medical advice, and it is not intended to diagnose, treat, cure or prevent any disease. Always consult a qualified practitioner before using any herb, particularly if you are pregnant, nursing, taking medication or managing a diagnosed condition.

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Yu Li Ren (Bush Cherry Seed): Moistens the intestines and promotes bowel movement