Herb

Qian Shi

Foxnut seed | 芡实

Also known as:

Euryale Seed

Parts Used

Seed (种子 zhǒng zǐ / 子 zǐ / 仁 rén)

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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About This Herb*

Traditional Chinese Medicine background and properties

Herb Description*

Euryale seed is a gentle, food-grade herb that has been used in Chinese medicine for over 2,000 years to support digestive and urinary health. It strengthens the Spleen and Kidneys, helping with chronic loose stools, frequent urination, and excessive vaginal discharge. Often called 'chicken-head rice,' it is mild enough for daily use in soups and porridges, earning its reputation as the 'water ginseng.'

Herb Category*

Main Actions*

  • Benefits the Kidneys and Secures Essence
  • Strengthens the Spleen and Stops Diarrhea
  • Secures the Kidneys and Stops Vaginal Discharge

How These Actions Work*

'Benefits the Kidneys and secures essence' means Qian Shi strengthens the Kidneys' ability to hold and store vital substances. In TCM, the Kidneys are responsible for storing 'essence' (jīng), which governs reproduction, growth, and urinary control. When the Kidneys are weak, essence and fluids can leak out, causing problems like involuntary seminal emission, frequent urination, or bedwetting. Qian Shi's astringent taste gives it a binding, tightening quality that helps 'lock in' these substances. This is why it is so commonly used for men with involuntary seminal loss and for anyone with excessive nighttime urination.

'Tonifies the Spleen and stops diarrhoea' refers to Qian Shi's ability to strengthen digestive function. In TCM, the Spleen is the central organ of digestion, responsible for transforming food and transporting nutrients. When the Spleen is weak, it cannot properly manage fluids, leading to loose stools or chronic diarrhoea. Qian Shi's sweet taste nourishes the Spleen, while its astringent nature firms up the intestines. This makes it especially useful for prolonged diarrhoea caused by weak digestion rather than by infection.

'Eliminates dampness and stops vaginal discharge' means Qian Shi addresses excessive vaginal discharge (known as 'dai xia' in TCM). By strengthening both the Spleen (which controls dampness) and the Kidneys (which govern the lower body), Qian Shi tackles the root cause of abnormal discharge. Its astringent quality then directly reduces the leakage itself. This dual action of addressing the root deficiency while also providing symptomatic relief makes it a go-to herb for both clear/white discharge from cold-deficiency and yellow discharge from dampness-heat (when combined with heat-clearing herbs).

Patterns Addressed*

In TCM, symptoms cluster into recognizable patterns of disharmony that reveal what's out of balance in the body. Qian Shi is traditionally associated with these specific patterns.

The following describes this herb's classification within Traditional Chinese Medicine theory and is provided for educational purposes only.

Why Qian Shi addresses this pattern

When the Kidneys lack sufficient Qi, they lose their ability to 'hold' and store essence and fluids. This leads to leakage of vital substances downward. Qian Shi enters the Kidney channel and its astringent taste directly addresses this failure to contain. Its sweet taste gently tonifies the Kidney Qi that is deficient. Together, these properties restore the Kidneys' grasping and storing function, which is why Qian Shi is a primary herb for seminal emission, frequent urination, and urinary incontinence caused by Kidney Qi weakness.

A practitioner would look for one or more of these signs

Frequent Urination

Especially nighttime urination

Urinary Incontinence

Or dribbling after urination

Premature Ejaculation

With involuntary seminal loss

Lower Back Pain

Dull, weak ache in the lower back and knees

TCM Properties*

Temperature

Neutral

Taste

Sweet (甘 gān), Astringent (涩 sè)

Channels Entered
Spleen Kidneys
Parts Used

Seed (种子 zhǒng zǐ / 子 zǐ / 仁 rén)

This is partial information on the herb's TCM properties. More detailed information is available on the herb's dedicated page

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Product Details

Manufacturing, supplier, and product specifications

Product Type

Granules

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Treasure of the East

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Usage & Safety

How to use this herb and important safety information

Important Medical Disclaimer

The information provided here is for educational purposes only and is not intended as medical advice or to replace consultation with a qualified healthcare professional. This herb is a dietary supplement and has not been evaluated by the FDA. It is not intended to diagnose, treat, cure, or prevent any disease.

Always consult with a qualified healthcare provider, particularly if you are pregnant, nursing, have a medical condition, or are taking other medications. Discontinue use and consult your healthcare provider if you experience any adverse reactions.

Recommended Dosage

Instructions for safe storage and consumption

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Processing Methods

Processing method

Stir-fried with wheat bran (麸炒法): wheat bran is heated in a wok until smoking, then Qian Shi is added and stir-fried until the surface turns slightly yellow. The bran is then sieved out.

How it changes properties

Bran-frying enhances Qian Shi's Spleen-tonifying action and makes it more warming and easier to digest. The raw form has a slightly more balanced profile between Spleen and Kidney actions, while the bran-fried form focuses more strongly on strengthening the Spleen and stopping diarrhoea. The astringent action is slightly moderated.

When to use this form

Preferred when the primary goal is to stop chronic diarrhoea from Spleen deficiency. Also chosen when the patient has weak digestion and may have difficulty absorbing the raw form. This is the form specified in Yi Huang Tang and many clinical formulas.

Special Populations

Pregnancy

Generally considered safe at standard dietary and medicinal doses during pregnancy. Qian Shi is a gentle, neutral-natured food-grade herb with no known abortifacient or uterine-stimulating properties. However, its astringent and binding nature means it should be used cautiously in pregnant women who tend toward constipation or bloating, as these complaints are already common in pregnancy. As always, use during pregnancy should be guided by a qualified practitioner.

Breastfeeding

Considered safe during breastfeeding. Qian Shi is widely used in postpartum dietary therapy in China to strengthen the Spleen and support Qi and Blood recovery, which can indirectly support milk production. It is commonly combined with chicken, lotus seeds, and Chinese yam in nourishing soups for new mothers. There are no known concerns about harmful substances transferring through breast milk. Note that it should not be used in the immediate postpartum period (first few days) when lochia needs to be discharged, due to its astringent nature.

Pediatric Use

Qian Shi is considered safe for children and is traditionally used in pediatric dietary therapy for Spleen deficiency with chronic diarrhea or frequent urination. It is commonly prepared as congee (rice porridge) with pumpkin or other mild foods for easy digestion. Dosages for children should be reduced proportionally by age: roughly one-third to one-half of the adult dose for children over 3 years. It should be thoroughly cooked until soft, as the hard, starchy texture can be difficult for young children to digest. Avoid use in children with constipation.

Dietary Advice

When taking Qian Shi to strengthen the Spleen and stop diarrhea, avoid cold and raw foods, iced drinks, greasy or fried foods, and excessive dairy, as these can counteract its Spleen-supporting effect. Qian Shi pairs well with other gentle, warming Spleen foods such as rice porridge, Chinese yam, lotus seeds, and well-cooked vegetables. Because Qian Shi is starchy and somewhat binding, ensure adequate water intake and include some fiber-rich foods to prevent constipation.

Cautions & Warnings

Although this formula is typically safe for most individuals, it may cause side effects in some people. Pregnant women, nursing mothers, postpartum women, and those with liver disease should use the formula with caution.

As with any Chinese herbal remedy, it is advisable to seek guidance from a qualified TCM practitioner before beginning treatment.