Herb

Gu Sui Bu

Drynaria rhizome | 骨碎补

Also known as:

Drynaria fortunei , Aglaomorpha fortunei

*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*

Gu Sui Bu, sometimes called 'the bone mender,' is one of Chinese medicine's most important herbs for healing fractures and strengthening bones. It warms and supports the Kidneys, which in TCM govern bone health, making it useful for lower back pain, loose teeth, tinnitus, and weak knees. It is also applied externally for patchy hair loss.

Herb Category*

Main Actions*

  • Treats Traumatic Injuries
  • Benefits the Kidneys and Strengthens the Bones
  • Invigorates Blood and Dispels Stasis
  • Strengthens the Sinews and Bones
  • Dispels Wind-Heat from the Skin

How These Actions Work*

'Heals injuries and stops pain' means Gǔ Suì Bǔ directly treats traumatic injuries, especially bone fractures and sprains. Its bitter taste and warm nature allow it to move stagnant Blood away from the injury site while its Kidney-strengthening action supports bone repair. This is the herb's signature action and the origin of its name, which literally means 'mender of shattered bones.' It is a staple herb in orthopedic formulas for fractures, dislocations, and soft tissue injuries, used both internally and as a topical application.

'Tonifies the Kidneys and strengthens bones' reflects the fact that in TCM, the Kidneys govern the bones. When Kidney function is weak, bones become fragile, teeth loosen, the lower back aches, and hearing declines. Gǔ Suì Bǔ's warm nature gently warms Kidney Yang, which supports bone density and structural integrity. This action is used for conditions like chronic lower back pain, weak knees, loose teeth, tinnitus, hearing loss, and prolonged diarrhea due to Kidney weakness.

'Invigorates Blood and disperses stasis' means the herb promotes blood circulation and breaks up accumulations of old, stagnant blood. This is why it reduces swelling and pain after trauma. Classical texts note it can both 'break Blood' and 'stop Blood,' meaning it clears stagnation without causing excessive bleeding.

'Dispels Wind and eliminates skin patches (external use)' refers to the topical application of Gǔ Suì Bǔ soaked in alcohol, which is used to treat patchy hair loss (alopecia areata) and vitiligo. The herb's stimulating, warming properties are thought to increase local blood flow to the affected skin areas.

Patterns Addressed*

In TCM, symptoms cluster into recognizable patterns of disharmony that reveal what's out of balance in the body. Gu Sui Bu 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 Gu Sui Bu addresses this pattern

Gǔ Suì Bǔ is bitter and warm, entering the Kidney and Liver channels. Its warm nature directly addresses the cold and weakness characteristic of Kidney Yang Deficiency. By warming Kidney Yang, it strengthens the bones and sinews (since the Kidneys govern the bones), which is why it treats the lower back pain, weak knees, loose teeth, tinnitus, and hearing loss that arise when Kidney Yang fails to nourish the skeletal system. Its ability to warm the Kidneys also addresses the chronic diarrhea that results when Kidney Yang cannot support the Spleen's digestive function (known as 'Kidney failing to warm the Spleen').

A practitioner would look for one or more of these signs

Lower Back Pain

Chronic, dull lower back pain worse with cold

Tinnitus

Low-pitched, persistent tinnitus from Kidney deficiency

Loose Teeth

Teeth loosening without gum inflammation

Hearing Loss

Gradual hearing decline

Chronic Diarrhea

Early morning diarrhea from Kidney-Spleen Yang failure

TCM Properties*

Temperature

Warm

Taste

Bitter (苦 kǔ)

Channels Entered
Liver Kidneys
Parts Used

Rhizome (根茎 gēn jīng)

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

Sand-fried (砂烫): Clean Gǔ Suì Bǔ slices are placed in pre-heated sand and stir-fried over strong heat until the pieces swell and puff up. They are then removed, sieved to remove the sand, cooled, and the burnt surface hairs are knocked off.

How it changes properties

Sand-frying reduces the raw herb's bitter, stasis-breaking quality while enhancing its warming, tonifying nature. The processed form becomes lighter, more porous, and easier to extract. Its emphasis shifts from invigorating Blood toward tonifying the Kidneys and strengthening bones. Naringin content actually increases after processing, improving its bone-protective activity.

When to use this form

The sand-fried form is the standard clinical form and is preferred for internal use in Kidney deficiency conditions such as chronic lower back pain, weak knees, loose teeth, tinnitus, and hearing loss. The raw form is more commonly used for topical applications or when stronger Blood-invigorating action is needed for acute trauma.

Special Populations

Pregnancy

Use with caution during pregnancy. Gu Sui Bu has significant Blood-invigorating and Blood-breaking properties, which could theoretically stimulate uterine contractions or promote excessive Blood movement, potentially disturbing the fetus. While it is not listed among the strictly prohibited pregnancy herbs in classical texts, its strong ability to move Blood warrants careful evaluation. It should only be used during pregnancy under direct practitioner supervision when the benefit clearly outweighs the risk, such as for acute fracture management.

Breastfeeding

No specific classical or modern contraindications for breastfeeding have been documented. However, given its warming nature and Blood-moving properties, caution is advised. The herb's active flavonoid compounds (such as naringin) may potentially transfer through breast milk, though this has not been formally studied. Use during breastfeeding should be kept to standard dosages and under practitioner guidance. If the nursing infant shows any signs of digestive upset or irritability, discontinue use.

Pediatric Use

Gu Sui Bu may be used in children for fracture healing and bone injuries, but dosage should be reduced proportionally based on age and body weight (typically one-third to one-half of the adult dose for children over 6 years). It is not commonly used in very young children (under 3 years) due to limited clinical data in this age group. The warming, Blood-moving nature of the herb requires particular care in children, who tend to have immature digestive systems. The processed (sand-fried) form is preferred over the raw herb to reduce gastrointestinal irritation. Always use under qualified practitioner supervision.

Dietary Advice

Classical sources (De Pei Ben Cao) advise avoiding lamb meat (羊肉), lamb blood (羊血), and rapeseed greens (芸薹菜, a Brassica vegetable) while taking Gu Sui Bu, as these were considered incompatible foods. When using the herb for Kidney-tonifying purposes, it is helpful to include warm, nourishing foods that support the Kidney such as black beans, walnuts, and bone broth, and to avoid excessive cold, raw foods that can impair the warming therapeutic effect.

Cautions & Warnings

Although this herb 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.