Ingredient Shell (壳 ké / 甲 jiǎ)

Hai Piao Shao

Cuttlefish bone · 海螵蛸

Sepiella maindroni de Rochebrune; Sepia esculenta Hoyle · Os Sepiae seu Sepiellae

Also known as: Wu Zei Gu (乌贼骨)

Hai Piao Shao (Cuttlefish bone) plant

Images shown are for educational purposes only

Cuttlefish bone is the dried internal shell of the cuttlefish, widely used in Chinese medicine as a natural acid-neutralizer and wound-healing agent. It is most commonly taken for stomach pain with acid reflux, various types of bleeding (heavy periods, nosebleeds, blood in stool), and chronic vaginal discharge. Applied externally as a powder, it promotes healing of stubborn skin sores and stops wound bleeding.

Category Astringent / Stabilizing herbs (收涩药) Hemostatic herbs (止血药)
Therapeutic focus Digestive Health Women's Health Skin and Wound Care Reproductive Health

TCM Properties

Temperature

Slightly Warm

Taste

Salty (咸 xián), Astringent (涩 sè)

Channels entered

Spleen, Kidneys, Liver

Parts used

Shell (壳 ké / 甲 jiǎ)

Educational content • Consult qualified TCM practitioners for diagnosis and treatment

What This Ingredient Does

Every ingredient has a specific set of actions — here's what Hai Piao Shao does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, Hai Piao Shao is primarily used to support these areas of health:

Digestive Health Women's Health Skin and Wound Care Reproductive Health

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Hai Piao Shao performs to restore balance in the body:

Astringes and Stops Bleeding Secures Essence and Stops Leakage Controls Acidity and Stops Pain Absorbs Dampness and Heals Sores

How these actions work

'Restrains and stops bleeding' means that cuttlefish bone has a strong astringent quality that helps the body hold blood within the vessels. It is used for various types of bleeding, including heavy menstrual bleeding (called 'flooding and spotting' in TCM), vomiting blood, nosebleeds, blood in the stool, and external wound bleeding. When applied topically as a powder, it can directly help close wounds. Its high calcium carbonate content contributes to this hemostatic effect by promoting blood clotting at the site of application.

'Secures essence and stops vaginal discharge' refers to the herb's ability to tighten and 'close' the body's lower openings when they are leaking due to weakness. In men, this addresses involuntary seminal emission or premature ejaculation caused by weak Kidney function. In women, it treats excessive, chronic vaginal discharge (leukorrhea). The herb's warm, astringent nature is what makes it effective at binding and holding fluids that should not be leaking.

'Restrains acidity and stops pain' is one of the herb's most well-known modern applications. Cuttlefish bone directly neutralizes excess stomach acid, relieving the burning pain and acid reflux that come with conditions like gastric ulcers or chronic gastritis. Its calcium carbonate content (over 85%) acts like a natural antite, absorbing acid and forming a protective layer over the stomach lining.

'Absorbs dampness and promotes healing of sores' describes the herb's topical use. When ground into a fine powder and applied to weeping eczema, damp skin rashes, or chronic non-healing ulcers, cuttlefish bone dries up excess moisture and encourages the skin to close and regenerate. This makes it especially useful for sores that ooze pus or fluid for a long time without healing.

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. Hai Piao Shao is used to help correct these specific patterns.

Why Hai Piao Shao addresses this pattern

When the Spleen is too weak to hold Blood within the vessels, bleeding disorders arise, particularly heavy menstrual bleeding (flooding and spotting), blood in the stool, or vomiting blood. Hǎi Piāo Xiāo's salty and astringent taste, combined with its warm nature and affinity for the Spleen channel, directly addresses this pattern by providing strong astringent binding to contain the Blood. It does not tonify the Spleen's Qi itself, but powerfully restrains the leakage that results from the Spleen's failure to control Blood. This is why it is almost always paired with Qi-tonifying herbs like Huáng Qí and Bái Zhú in formulas like Gù Chōng Tāng.

A practitioner would look for one or more of these signs

Postmenstrual Bleeding

Prolonged or heavy periods with pale, watery blood

Dark Blood In Stool

Chronic bloody stool, often with fatigue

Nosebleeds

Recurrent nosebleeds that are difficult to stop

Commonly Used For

These are conditions where Hai Piao Shao is frequently used — but only when they arise from the specific patterns it addresses, not in all cases

Arises from: Stomach Cold

TCM Interpretation

In TCM, peptic ulcers are most often understood as a disruption of the Stomach's harmonious descending function. When the Stomach is invaded by Cold, or when chronic emotional stress causes Liver Qi to attack the Stomach, the Stomach's protective barrier weakens. Acid 'overflows' upward (a reversal of the Stomach's normal downward movement), eroding the Stomach lining. Depending on the individual, this may involve Stomach Cold, Liver-Stomach disharmony, or Spleen-Stomach Qi Deficiency. The pain, acid reflux, and potential bleeding are all signs that the Stomach's containment function has broken down.

Why Hai Piao Shao Helps

Hǎi Piāo Xiāo is arguably the single most important herb for peptic ulcer disease in the TCM pharmacopoeia. Its calcium carbonate content (over 85%) directly neutralizes excess hydrochloric acid. Its astringent nature helps protect and close the damaged stomach lining, while its slightly warm temperature supports the Stomach when Cold is a contributing factor. If the ulcer is bleeding, its hemostatic properties address that too. Research in Taiwan found it to be the most commonly prescribed single herb for peptic ulcer disease. It is typically combined with Zhè Bèi Mǔ (Fritillaria) in the formula Wū Bèi Sǎn, which has demonstrated clinical effectiveness for acid pain and ulcer healing.

Also commonly used for

Thin Vaginal Discharge

Chronic leukorrhea, especially white watery type from Kidney deficiency

Nocturnal Emission

Involuntary seminal emission from Kidney Qi weakness

Dark Blood In Stool

Chronic rectal bleeding from deficiency patterns

Nosebleeds

Recurrent epistaxis; powder can be blown into the nose

Eczema

Chronic weeping eczema; powder applied topically

Gastritis

Chronic gastritis with acid regurgitation

Ulcer

Non-healing skin ulcers; powder applied externally to promote closure

Bleeding

Traumatic bleeding; powder applied directly to wound

Ingredient Properties

Every ingredient has an inherent temperature, taste, and affinity for specific channels — these properties determine how it interacts with the body

Temperature

Slightly Warm

Taste

Salty (咸 xián), Astringent (涩 sè)

Channels Entered

Spleen Kidneys Liver

Parts Used

Shell (壳 ké / 甲 jiǎ)

Dosage & Preparation

These are general dosage guidelines for Hai Piao Shao — always follow your practitioner's recommendation, as dosages vary based on the formula and your individual condition

Standard dosage

5-10g

Maximum dosage

Up to 15-20g in decoction for severe gastric acid conditions or heavy bleeding, under practitioner supervision. External use: appropriate amount, no strict upper limit.

Dosage notes

Use lower doses (5-6g) for mild gastric discomfort and acid control. Use moderate doses (6-10g) for hemostasis in conditions like nosebleeds, vomiting blood, or uterine bleeding. For stopping vaginal discharge or seminal emission, the standard range (5-10g) is typically sufficient. When used as powder taken directly (not in decoction), doses are smaller, typically 1.5-3g per dose, two to three times daily. For external wound hemostasis, use an appropriate amount of fine powder applied directly to the injury. Long-term use at higher doses may cause constipation; adding a small amount of Da Huang (rhubarb) to the formula can offset this.

Preparation

Because Hai Piao Shao is a dense, calcareous shell material, it should be broken into small pieces or crushed before adding to a decoction. For internal powder use, it should be ground to a fine powder and sifted. When used as decoction, it does not require pre-decoction (先煎) like harder mineral substances, as it dissolves readily in acidic or warm liquids. Different processed forms exist: raw (生用) for general purposes, dry-fried (炒) until yellow for milder astringency, calcined (煅) until blackened for enhanced hemostatic and wound-healing action, and vinegar-processed (醋炙) for enhanced pain-relieving effect.

Processing Methods

In TCM, the same ingredient can be prepared in different ways to change its effects — here's how processing alters what Hai Piao Shao does

Processing method

The raw cuttlefish bone pieces are dry-fried over low heat until they turn yellow.

How it changes properties

Stir-frying enhances the herb's astringent and hemostatic properties. The warming effect is slightly increased, and the slightly fishy odor of the raw form is reduced, making it easier to take internally. The ability to stop bleeding and secure essence is considered stronger in this form.

When to use this form

Preferred for internal use when the primary goal is stopping bleeding (uterine hemorrhage, GI bleeding) or securing essence (seminal emission, vaginal discharge). The most commonly used processed form.

Common Ingredient Pairs

These ingredients are traditionally combined with Hai Piao Shao for enhanced therapeutic effect

Bai Ji
Bai Ji 1:1 (equal parts, typically 10-15g each, ground into powder)

Hǎi Piāo Xiāo neutralizes stomach acid and astringes, while Bái Jí generates a sticky protective coating over the stomach lining and stops bleeding. Together they simultaneously neutralize acid, protect the damaged mucosa, and stop gastrointestinal bleeding, achieving what neither can do alone.

When to use: Gastric or duodenal ulcers with bleeding (vomiting blood or dark stools), or ulcer pain with excessive acid. This is one of the most widely used pairs in Chinese gastroenterology.

Zh
Zhe Bei Mu Hǎi Piāo Xiāo 85% : Zhè Bèi Mǔ 15% (approximately 6:1 by weight)

Hǎi Piāo Xiāo neutralizes acid and stops pain while Zhè Bèi Mǔ clears Heat, resolves masses, and reduces mucosal swelling. Together they form the classic Wū Bèi Sǎn formula, addressing both the acid irritation and the inflammatory swelling of peptic ulcers.

When to use: Stomach pain with acid regurgitation, gastric or duodenal ulcers. This is the defining pair of the Wū Bèi Sǎn formula.

Qian Cao
Qian Cao Hǎi Piāo Xiāo 12g : Qiàn Cǎo 9g (approximately 4:3)

Hǎi Piāo Xiāo astringes and stops bleeding through its binding quality, while Qiàn Cǎo (Rubia root) invigorates Blood and dispels stasis. The combination stops bleeding without trapping stagnant blood inside the body, a critical principle in gynecological hemorrhage treatment.

When to use: Uterine bleeding (flooding and spotting), especially from Spleen deficiency patterns. This pair appears in Gù Chōng Tāng and other gynecological formulas.

Shan Zhu Yu
Shan Zhu Yu 1:1 to 1:2 (Hǎi Piāo Xiāo 10g : Shān Zhū Yú 10-20g)

Hǎi Piāo Xiāo provides strong astringent binding to secure essence, while Shān Zhū Yú tonifies and astringes the Liver and Kidneys. Together they both strengthen the Kidney's storage function and tighten its 'gate,' addressing the root (Kidney weakness) and the branch (leaking essence) simultaneously.

When to use: Kidney deficiency with seminal emission, spermatorrhea, or chronic vaginal discharge. Used in formulas for securing essence.

Key Formulas

These well-known formulas feature Hai Piao Shao in a prominent role

Gu Chong Tang 固冲汤 Assistant

Gù Chōng Tāng (Stabilize the Penetrating Vessel Decoction) from the Yī Xué Zhōng Zhōng Cān Xī Lù is the definitive formula for deficiency-type uterine bleeding. Hǎi Piāo Xiāo serves as an assistant at 12g, showcasing its core hemostatic and astringent properties alongside other binding agents like dragon bone and oyster shell. This formula highlights how the herb stops bleeding through astringency rather than tonification.

Comparable Ingredients

These ingredients have overlapping uses — here's how to tell them apart

Sang Piao Shao
Hai Piao Shao vs Sang Piao Shao

Both secure essence and stop discharge by entering the Kidney channel. However, Sāng Piāo Xiāo (praying mantis egg case) also tonifies Kidney Yang and is better suited for urinary issues like enuresis and frequent urination. Hǎi Piāo Xiāo has a stronger astringent and binding power and additionally stops bleeding, neutralizes stomach acid, and heals sores, none of which Sāng Piāo Xiāo does. Choose Sāng Piāo Xiāo when the root problem is Kidney Yang weakness with urinary symptoms; choose Hǎi Piāo Xiāo when the emphasis is on stopping bleeding, controlling acid, or when the discharge/leakage is heavy.

Mu Li Ke
Hai Piao Shao vs Mu Li Ke

Both are shell-derived, salty, astringent substances that secure essence and stop discharge. Mǔ Lì (oyster shell) additionally calms the Liver, subdues Liver Yang rising, anchors the spirit (useful for anxiety and insomnia), and softens hardness (nodules, masses). Hǎi Piāo Xiāo has superior acid-neutralizing and wound-healing properties and is the stronger hemostatic. Choose Mǔ Lì when there are concurrent emotional symptoms, Liver Yang rising (headaches, irritability), or masses; choose Hǎi Piāo Xiāo for stomach acid problems, bleeding, or topical wound care.

Wa Leng Zi
Hai Piao Shao vs Wa Leng Zi

Both neutralize stomach acid. Wǎ Léng Zǐ (ark shell) also invigorates Blood and disperses blood stasis and phlegm nodules, making it better for conditions involving masses or lumps alongside acid. Hǎi Piāo Xiāo is a stronger astringent that also stops bleeding and heals sores, making it the better choice when the ulcer is actively bleeding or when wound healing is the priority.

Common Substitutes & Adulterants

Related species and common adulterations to be aware of when sourcing Hai Piao Shao

The most common point of confusion is between Hai Piao Shao (海螵蛸, cuttlebone) and Sang Piao Shao (桑螵蛸, mantis egg case). Despite the similar names, these are completely different substances with distinct actions and must never be substituted for one another. Hai Piao Shao focuses on hemostasis and acid control, while Sang Piao Shao focuses on tonifying the Kidney to control urination. Cuttlebones from non-pharmacopoeia species of cuttlefish (e.g. African or Southeast Asian species) are sometimes traded as substitutes. These may differ in size, morphology, and CaCO3 content. The Chinese Pharmacopoeia specifies only Sepiella maindroni and Sepia esculenta as official sources. Authentic material can be distinguished by checking size (9-23 cm), the characteristic wave-like horizontal lines on the ventral surface, and the presence or absence of a terminal spine (present in Sepia esculenta, absent in Sepiella maindroni).

Educational content — always consult a qualified healthcare provider or TCM practitioner before using any ingredient.

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for Hai Piao Shao

Non-toxic

Hai Piao Shao is classified as non-toxic by the Ming Yi Bie Lu (《别录》: '无毒'). The Yao Xing Lun attributed slight toxicity (有小毒), but this is not reflected in modern classification. The primary constituent is inert calcium carbonate (over 85%), along with chitin, mucilage, and trace minerals. There are no significant toxic components. The main safety concern with prolonged use is constipation due to the calcium carbonate content and astringent properties. No special processing is required for detoxification; standard preparation involves washing, drying, and breaking into small pieces.

Contraindications

Situations where Hai Piao Shao should not be used or requires extra caution

Caution

Yin deficiency with internal Heat (阴虚多热). The warming, astringent nature of Hai Piao Shao can exacerbate Yin-deficient Heat conditions. Classical sources such as the Ben Cao Jing Shu specifically warn against use when Blood disorders are accompanied by Heat.

Caution

Prolonged or excessive use may cause constipation due to the high calcium carbonate content and its astringent, drying properties. Monitor bowel function during extended administration.

Caution

Classical incompatibility (恶, 'aversion') with Bai Lian (白敛, Ampelopsis root), Bai Ji (白及, Bletilla rhizome), and Fu Zi (附子, Aconite root). Though not part of the formal Eighteen Incompatibilities, classical texts advise against combining these herbs with Hai Piao Shao.

Caution

Active bleeding from Blood Heat patterns (血热妄行). Hai Piao Shao is an astringent hemostatic suited for deficiency-type or cold-type bleeding. Using it in Heat-driven hemorrhage could trap pathogenic Heat inside the body.

Classical Incompatibilities

Traditional Chinese pharmacological incompatibilities — herbs or substances to avoid combining with Hai Piao Shao

Hai Piao Shao does not appear on the formal Eighteen Incompatibilities (十八反) or Nineteen Mutual Fears (十九畏) lists. However, classical sources record 'aversion' (恶) relationships: the Ben Cao Jing Ji Zhu states it is averse to Bai Lian (白敛) and Bai Ji (白及), and the Shu Ben Cao adds aversion to Fu Zi (附子). These are not formal 'incompatibilities' (反) but indicate traditional caution against combining these herbs.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

Generally considered safe at standard doses during pregnancy. Hai Piao Shao is astringent and hemostatic rather than Blood-moving, so it does not pose the uterine-stimulant risks associated with Blood-invigorating herbs. It is included in some classical gynaecological formulas for abnormal uterine bleeding. However, as with all medicinals during pregnancy, it should be used under practitioner guidance and only when clearly indicated.

Breastfeeding

No specific concerns have been documented regarding breastfeeding. Hai Piao Shao is composed primarily of calcium carbonate and chitin, which are not expected to transfer through breast milk in pharmacologically significant amounts. It has been used traditionally in postpartum formulas for uterine bleeding and vaginal discharge without reported adverse effects on nursing infants. Use at standard dosages under practitioner guidance is generally considered acceptable.

Children

Hai Piao Shao can be used in children at proportionally reduced dosages. Classical texts such as the Shi Liao Ben Cao mention its use in children for dysentery. Typical paediatric doses range from 1 to 5g depending on age. For external use (wound powder), it can be applied in children without specific age restrictions. The high calcium carbonate content makes it relatively gentle, but prolonged internal use should be monitored for constipation.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with Hai Piao Shao

Antacids and acid-suppressing medications: Hai Piao Shao contains over 85% calcium carbonate and acts as a natural antacid. Using it concurrently with proton pump inhibitors (PPIs), H2 receptor blockers, or other antacids may result in excessive acid neutralisation or altered drug absorption due to elevated gastric pH.

Calcium supplements and Vitamin D: Due to its high calcium carbonate content, concurrent use with calcium supplements or high-dose Vitamin D could theoretically contribute to hypercalcaemia, particularly in patients with impaired renal function.

Phosphate binders: Hai Piao Shao has demonstrated phosphate-binding activity in clinical trials for dialysis patients. It may interact with or duplicate the effects of pharmaceutical phosphate binders such as calcium acetate or sevelamer.

Tetracycline and fluoroquinolone antibiotics: Like other calcium-containing substances, Hai Piao Shao may chelate with tetracyclines and fluoroquinolones, reducing their absorption and efficacy. Separate administration by at least two hours.

Iron supplements: Calcium carbonate can reduce absorption of oral iron preparations. If used together, space doses apart by at least two hours.

Dietary Advice

Foods and dietary considerations when taking Hai Piao Shao

When taking Hai Piao Shao for gastric acid conditions, avoid sour, acidic, spicy, and greasy foods that stimulate acid secretion. Alcohol and coffee should also be minimised. When used for hemostasis or gynaecological conditions, avoid cold and raw foods that may impair Spleen function and worsen bleeding. If taking the herb for vaginal discharge, reduce intake of dairy, sweets, and damp-producing foods.

Botanical Description

Physical characteristics and morphology of the Hai Piao Shao source animal

Hai Piao Shao (海螵蛸) is not derived from a plant but from a marine animal. It is the dried internal shell (cuttlebone) of cuttlefish belonging to the family Sepiidae, primarily Sepiella maindroni de Rochebrune (Needleless Cuttlefish) or Sepia esculenta Hoyle (Golden Cuttlefish). Cuttlefish are soft-bodied cephalopod molluscs with a broad, dorsoventrally flattened body (mantle), eight arms, two retractable tentacles, and a pair of lateral fins running along the mantle edges. They are nektobenthic organisms inhabiting shallow coastal waters at depths of 10 to 150 metres.

The cuttlebone itself is an internal, boat-shaped calcareous shell that functions as a sophisticated buoyancy device. It is composed primarily of calcium carbonate (over 85%) in its aragonite form, arranged in an intricate structure of superposed chambers with calcified pillars and organic membranes made of beta-chitin and protein. The cuttlebone is white, lightweight, porous, and chalky in texture, typically 9 to 23 cm long depending on species. Cuttlefish migrate to shallow coastal waters in spring and summer to spawn, depositing clusters of dark, grape-like eggs on seaweed and other substrates.

Sourcing & Harvesting

Where Hai Piao Shao is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

Spring and summer (April to August), when cuttlefish migrate to shallow coastal waters for spawning. Cuttlebones may also be collected year-round when washed ashore.

Primary growing regions

Hai Piao Shao is a marine product sourced from the coastal waters of China and adjacent seas. The Needleless Cuttlefish (Sepiella maindroni) is mainly harvested along the coasts of Zhejiang and Fujian provinces. The Golden Cuttlefish (Sepia esculenta) is primarily found in the waters off Liaoning, Shandong, Jiangsu, Fujian, Guangxi, and Guangdong. Shandong and Zhejiang coastal regions are traditionally considered the most important production areas. Non-Chinese sources, including African and Vietnamese cuttlebone, are also traded but may not conform to Chinese Pharmacopoeia standards regarding size and morphology.

Quality indicators

Good quality Hai Piao Shao is large, complete, dry, white or off-white in colour, with a clean appearance. The surface should show fine, wave-like horizontal layered markings on the ventral side and a porcelain-white ridge on the dorsal side. It should be lightweight, porous, and easy to break, with a powdery, chalky cross-section showing loose layered striations. The smell should be faintly fishy, and the taste mildly salty. Pieces that are grey, discoloured, broken, or heavily soiled are of lower quality. Per the Chinese Pharmacopoeia, CaCO3 content must be no less than 86%.

Classical Texts

Key passages from the classical Chinese medical texts that describe Hai Piao Shao and its therapeutic uses

Shen Nong Ben Cao Jing (《神农本草经》)

Original: 主女子漏下赤白经汁，血闭，阴蚀肿痛，寒热症瘕，无子。

Translation: It treats women's leaking discharge of red and white vaginal fluid, Blood obstruction and amenorrhoea, genital erosion with swelling and pain, Cold-Heat masses, and infertility.

Ming Yi Bie Lu (《名医别录》)

Original: 惊气入腹，腹痛环脐，阴中寒肿，又止疮多脓汁不燥。

Translation: It treats fright-Qi entering the abdomen, abdominal pain circling the navel, cold swelling of the genitals, and also stops sores that discharge excessive pus and will not dry.

Ben Cao Gang Mu (《本草纲目》, Li Shizhen)

Original: 乌鲗骨，厥阴血分药也，其味咸而走血也，故血枯、血瘕、经闭、崩带、下痢、疳疾，厥阴本病也。

Translation: Cuttlebone is a medicinal substance for the Blood aspect of the Jue Yin [Liver] channel. Its salty flavour directs it to the Blood. Therefore Blood desiccation, Blood masses, amenorrhoea, flooding and vaginal discharge, dysentery, and childhood malnutrition are all root diseases of Jue Yin.

Su Wen (《素问》, as cited in Ben Cao Gang Mu)

Original: 有病胸胁支满者……病名曰血枯……治之以四乌鲗骨一蔖茹……所以利肠中及肝伤也。

Translation: There is a disease with fullness and distension of the chest and flanks... the disease is called Blood Desiccation... treat it with four parts cuttlebone and one part Lü Ru [madder root]... this benefits the intestines and [repairs] Liver damage. (This is one of the earliest recorded formulas using cuttlebone.)

Historical Context

The history and evolution of Hai Piao Shao's use in Chinese medicine over the centuries

Hai Piao Shao has been used in Chinese medicine since antiquity. Its earliest recorded use appears in the Shen Nong Ben Cao Jing (circa Han dynasty), where it is listed for gynaecological conditions including abnormal vaginal discharge, amenorrhoea, and infertility. The Su Wen records what may be one of the oldest named formulas using cuttlebone: a combination of four parts cuttlebone with one part madder root (Lü Ru/蔖茹, i.e. Qian Cao) for treating a condition called 'Blood Desiccation' (血枯), characterised by chest distension, coughing blood, and cessation of menses.

The name '海螵蛸' literally means 'sea egg-case' (螵蛸 originally referred to the egg case of the praying mantis, Sang Piao Shao). The cuttlebone was given this name because its shape was thought to resemble the mantis egg case, with the prefix '海' (sea) distinguishing it. Its older and more descriptive name is Wu Zei Gu (乌贼骨), meaning 'cuttlefish bone', or Mo Yu Gai (墨鱼盖), 'ink-fish lid'. Li Shizhen in the Ben Cao Gang Mu provided an extensive commentary, firmly placing cuttlebone as a Jue Yin (Liver) Blood-level medicinal. Over the centuries, its clinical application expanded from primarily gynaecological uses to encompass gastric acid control, haemostasis, wound healing, and dermatological applications.

Modern Research

3 published studies investigating the pharmacological effects or clinical outcomes of Hai Piao Shao

1

Meta-analysis of RCTs: Cuttlebone for lowering serum phosphate in end-stage renal disease (2023)

Chen HT, Hung KC, Hsu CW, Chen JY, Liu CC, Chen IW, Sun CK. Frontiers in Pharmacology, 2023, 14: 1206366.

This systematic review of nine randomised controlled trials (726 participants) found that cuttlebone significantly reduced circulating phosphate levels in dialysis patients compared to conventional phosphate binders, with a dose-dependent effect. The treatment showed good tolerability with fewer adverse effects on appetite compared to standard phosphate-lowering agents.

2

Systematic review: Cuttlebone-derived biomaterials in regenerative medicine, dentistry, and tissue engineering (2024)

Multiple authors. Journal of Functional Biomaterials, 2024, 15(8): 219.

This systematic review examined the use of cuttlebone-derived hydroxyapatite as a scaffold material for bone tissue engineering. Cuttlebone's natural aragonite structure can be readily converted to hydroxyapatite and demonstrates high biocompatibility, interconnected pore structures suitable for bone cell growth, and strong in vitro bioactivity confirmed by osteoblast testing.

PubMed
3

In vitro and in vivo hemostatic evaluation: Cuttlebone loaded with cuttlefish ink nanoparticles (2024)

Journal of Materials Chemistry B, 2024, 12: 4172-4183.

This study developed a composite hemostatic material combining cuttlebone powder with cuttlefish ink nanoparticles. In rat liver injury models, the composite reduced bleeding time from 158 seconds (cuttlebone alone) to 47 seconds. The material demonstrated excellent hemocompatibility and no cytotoxicity, supporting the traditional use of cuttlebone for hemostasis.

Research on individual TCM herbs is growing but still limited by Western clinical trial standards. These studies provide emerging evidence and should be considered alongside practitioner expertise.