Herb

Shi Jue Ming (Duan)

Abalone shell (Processed) | 石决明

Also known as:

Jiu Kong Luo (九孔螺) , Bao Yu Ke (鲍鱼壳)

*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*

Abalone shell is a cold, mineral-like substance used in Chinese medicine primarily for conditions involving the head and eyes. It is best known for calming excessive upward activity in the body that causes headaches, dizziness, and high blood pressure, and it is one of TCM's most important herbs for eye health, used for red or painful eyes, blurred vision, and night blindness.

Herb Category*

Main Actions*

  • Calms the Liver and Subdues Yang
  • Clears Liver Heat
  • Brightens the Eyes

How These Actions Work*

'Calms the Liver and subdues Yang' (平肝潜阳 píng gān qián yáng) means this herb anchors and pulls down overactive Liver Yang that has risen to the head. In TCM, when the Liver's Yang aspect becomes excessive (often due to underlying Yin deficiency), it flares upward causing headaches, dizziness, irritability, and a feeling of pressure in the head. Shi Jue Ming's salty taste and heavy, shell-like quality give it a natural downward-pulling action that counteracts this rising tendency. The classical text Yi Xue Zhong Zhong Can Xi Lu calls it "an essential herb for cooling and settling the Liver" (凉肝镇肝之要药). It is especially well suited to cases where both Yin deficiency and Yang excess are present, because its cold nature simultaneously cools the Heat that accompanies Yang rising.

'Clears Liver Heat' (清肝热 qīng gān rè) refers to this herb's ability to drain excess Heat from the Liver channel. When the Liver carries too much Heat, it can manifest as red, painful, swollen eyes, a flushed face, or a bitter taste in the mouth. The cold, salty nature of Shi Jue Ming enters the Liver's blood level and clears this Heat, which is why classical sources say "its salty, cold nature enters the blood and removes Heat, thus treating all manner of eye diseases."

'Brightens the eyes' (明目 míng mù) means this herb directly addresses a wide range of eye conditions. Since the Liver "opens to the eyes" in TCM theory, treating the Liver often improves vision. Shi Jue Ming is considered one of the most important herbs for eye health. It treats both excess-type eye problems (red, swollen, painful eyes from Liver Fire) and deficiency-type eye problems (blurred vision, night blindness, dry eyes from Liver and Kidney Yin deficiency) when combined with appropriate partner herbs. The calcined form is especially used for external eye conditions and corneal opacities.

Patterns Addressed*

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

Shi Jue Ming is one of the primary herbs for Liver Yang Rising. Its salty taste and heavy, shell-derived quality give it a strong downward-pulling and anchoring action that directly counteracts the upward surge of Yang. Its cold thermal nature simultaneously clears the Heat that often accompanies Liver Yang excess. When Liver and Kidney Yin are depleted, they can no longer restrain Liver Yang, which flares upward and disturbs the head. Shi Jue Ming subdues this rising Yang while its cold nature partially nourishes the Yin aspect by clearing Heat. Classical sources describe it as "an essential herb for cooling and settling the Liver," making it applicable to both excess and deficiency presentations of this pattern.

A practitioner would look for one or more of these signs

Dizziness

Dizziness and vertigo from Yang rising to the head

Headaches

Headache with a sensation of distension, especially at the temples or vertex

Tinnitus

Ringing in the ears

Irritability

Irritability and easy anger

TCM Properties*

Temperature

Cold

Taste

Salty (咸 xián)

Channels Entered
Liver
Parts Used

Shell (壳 ké / 甲 jiǎ)

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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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

The cleaned abalone shell is placed in a suitable container and calcined over strong, smokeless flame until brittle, then removed, cooled, and crushed.

How it changes properties

Calcination reduces the salty taste and cold nature somewhat. The raw shell's strong Liver-subduing and Yang-anchoring action is diminished, but its ability to brighten the eyes is enhanced. Calcined Shi Jue Ming also gains astringent, acid-neutralizing, and hemostatic actions not present in the raw form, due to the conversion of calcium carbonate to calcium oxide.

When to use this form

Use calcined Shi Jue Ming for eye conditions (especially topical application as water-ground powder for corneal opacities), for excess stomach acid with epigastric pain, for non-healing sores, and for external bleeding. When the primary goal is calming the Liver and subduing Yang (e.g. for hypertension), the raw form is preferred.

Classical Incompatibilities

Shi Jue Ming does not appear on the standard Eighteen Incompatibilities (十八反) or Nineteen Mutual Fears (十九畏) lists. However, the Ben Cao Jing Shu (本草经疏) notes that it 'fears Xuan Fu Hua (旋覆花, Inula flower)', and the Ben Cao Qiu Yuan (本草求原) states that it 'clashes with Yun Mu (云母, mica)'. These are secondary traditional cautions rather than the standard classical incompatibilities.

Special Populations

Pregnancy

Generally considered safe at standard doses during pregnancy when prescribed by a qualified practitioner, but caution is warranted. Its cold nature and heavy-settling properties mean it should be avoided in pregnant women with Spleen-Stomach deficiency cold or weak digestion. Some commercial sources advise against use during pregnancy as a general precaution. There is no classical prohibition specific to pregnancy, and the herb does not have known uterine-stimulating properties. However, its strong cold nature could theoretically affect fetal development if used in large doses or for prolonged periods without monitoring.

Breastfeeding

No specific classical or modern contraindications for breastfeeding have been documented. As a primarily mineral substance (calcium carbonate with trace proteins), transfer of active compounds through breast milk is considered minimal. However, its cold nature may theoretically affect lactation in women with underlying Spleen-Stomach cold deficiency. Use with caution and under practitioner guidance during breastfeeding.

Pediatric Use

Can be used in children at reduced doses proportional to age and body weight, typically one-third to one-half of the adult dose. Due to its cold nature, particular care should be taken in children with weak digestion or Spleen deficiency. Always crush and decoct first (先煎) as for adults. The powdered, calcined form may be easier to administer to children.

Dietary Advice

When taking Shi Jue Ming for Liver Yang rising or Liver Fire patterns, avoid hot, spicy, and pungent foods such as chilli peppers, garlic, strong alcohol, and fried or greasy foods, as these can aggravate Liver Heat and counteract the herb's cooling effects. Favour cooling, Liver-nourishing foods such as leafy green vegetables, celery, chrysanthemum tea, and goji berries. Because Shi Jue Ming is cold in nature, those with sensitive digestion should consume warm, easily digestible foods alongside it to protect the Stomach.

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.