Herb

Ji Nei Jin (Chao)

Chicken gizzard skin (processed) | 鸡内金(炒)

Also known as:

Fired chicken gizzard skin , Fired Gizzard Lining

Ji Nei Jin (Chao)

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Properties

Food stagnation-relieving herbs (消食药) · Neutral

Traditionally supports*

Digestive Health Urinary Health Liver and Gallbladder Health Pediatric nutrition

Parts Used

Animal — part (动物部分 dòng wù bù fèn)

*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

Ji Nei Jin is the dried inner lining of the chicken gizzard, one of the most popular digestive aids in Chinese medicine. It is widely used for indigestion, bloating, poor appetite, and childhood nutritional deficiencies. It is also valued for its ability to help dissolve urinary and gallbladder stones and to address bedwetting in children.

Herb Category

Food stagnation-relieving herbs (消食药)

Main Actions

  • Promotes Digestion and Resolves Food Stagnation
  • Strengthens the Spleen
  • Secures Essence and Stops Enuresis
  • Softens hardness and dissolves stones
  • Resolves Food Stagnation and Transforms Accumulations

How These Actions Work

'Promotes digestion and resolves food stagnation' is the primary action of Ji Nei Jin. It strongly breaks down accumulated undigested food in the Stomach and intestines, relieving symptoms like bloating, fullness, poor appetite, and nausea after eating. It is effective for stagnation of all food types, including grains, starches, dairy, and meat. For mild cases, the powder alone can be sufficient; for more stubborn food stagnation, it is combined with other digestive herbs like Shan Zha (hawthorn) and Mai Ya (barley sprout).

'Invigorates the Spleen's transport function' means Ji Nei Jin does more than just break down food. It actively strengthens the Spleen's ability to transform food into usable nourishment for the body. This makes it especially valuable for childhood malnutrition (gan ji), where the Spleen is weak and food accumulates rather than being properly absorbed. The famous physician Zhang Xichun noted that pairing Ji Nei Jin with Bai Zhu (white atractylodes) creates a powerful combination that both dissolves stagnation and strengthens digestion simultaneously.

'Secures essence and stops enuresis' refers to the herb's ability to restrain and consolidate the body's vital substances in the lower body. It is used for bedwetting in children, frequent urination, and involuntary seminal emission. This action relates to its entry into the Urinary Bladder channel. The stir-fried (chao) form is preferred for this purpose.

'Softens hardness and dissolves stones' is an action inspired by the gizzard's natural ability to grind down pebbles and hard materials in the chicken's digestive tract. In TCM, the raw form of Ji Nei Jin is used to help dissolve and expel gallstones, kidney stones, and bladder stones. It is commonly paired with Jin Qian Cao (Lysimachia) for this purpose.

'Transforms accumulations' extends beyond food stagnation to include masses and stagnation anywhere in the body. Zhang Xichun emphasized that Ji Nei Jin can address abdominal masses in both men and women, and even stagnation in the meridians in chronic wasting conditions. For this action, the raw form must be used.

Patterns Addressed

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

Ji Nei Jin is one of the strongest herbs for resolving food stagnation. Its sweet, neutral nature enters the Spleen and Stomach channels directly, where it powerfully breaks down accumulated food that the weakened Spleen and Stomach have failed to transform. Unlike purely draining digestive herbs, Ji Nei Jin simultaneously supports the Spleen's transport function, making it suitable even when food stagnation coexists with underlying Spleen weakness. Zhang Xichun noted that it can dissolve stagnation throughout the body, not just in the digestive tract.

A practitioner would look for one or more of these signs

Post-Surgical Constipation And Bloating

Abdominal distension and fullness after meals

Poor Appetite

Reduced desire to eat

Nausea

Nausea or vomiting of undigested food

Belching

Sour, foul-smelling belching

TCM Properties

Temperature

Neutral

Taste

Sweet (甘 gān)

Channels Entered
Spleen Stomach Small Intestine Urinary Bladder
Parts Used

Animal — part (动物部分 dòng wù bù fèn)

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

Product Details

Manufacturing, supplier, and product specifications

Product Type

Granules

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Botanical & Sourcing

Quality Indicators

Good quality Ji Nei Jin is dry, complete (not torn into small fragments), relatively large in size, and golden-yellow in color. The surface should show clearly defined ridge-like wrinkles. It should be thin, semi-translucent, and brittle, snapping cleanly with a glossy, horn-like (keratinous) cross-section. The smell should be faintly fishy and the taste slightly bitter. Darker brown or blackish pieces come from older chickens and are considered lower grade. Pieces from traditionally raised free-range chickens (raised for 2-3 years) are thicker, more robust, and pharmacologically more potent than those from commercially farmed broilers (raised for only 2-3 months), which tend to be thinner and more fragile.

Primary Growing Regions

Ji Nei Jin is an animal product sourced from domestic chickens and is produced throughout all regions of China wherever chickens are raised. There is no specific "terroir" (dao di) designation for this substance, as it is universally available. Major commercial sources include Shandong, Henan, Hebei, Sichuan, Guangdong, Guangxi, Hunan, Hubei, Jiangsu, and Anhui provinces. Quality can vary significantly depending on whether the chickens are traditionally raised free-range (which yields thicker, more potent gizzard linings) versus modern commercially farmed broiler chickens (which are slaughtered at 2-3 months and yield thinner, less active membranes).

Harvesting Season

Year-round, as a byproduct of chicken slaughter. The gizzard lining is peeled from the freshly killed chicken while the gizzard is still warm, then washed and sun-dried.

Supplier Information

Treasure of the East

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Miscellaneous Info

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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

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Instructions for safe storage and consumption

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Traditional Dosage Reference

Standard

3-10g

Maximum

Up to 15g in decoction for severe food stagnation or stone conditions, under practitioner guidance. When taken as ground powder (which is considered more effective), the typical maximum is 3g per dose, 2-3 times daily.

Notes

Ji Nei Jin is considered significantly more effective when taken as ground powder (yan mo tun fu) rather than decocted in water. This is because its active components, including ventriculin and trace digestive enzymes, may be degraded by prolonged boiling. When taken as powder, the standard dose is 1.5-3g per dose. In decoction, 3-10g is used. For dissolving urinary or biliary stones, the raw (unprocessed) form is preferred, typically 3g powder taken 2-3 times daily with warm water, often combined with Jin Qian Cao decoction. For strengthening the Spleen, stopping diarrhea, or treating enuresis, the dry-fried (chao) or sand-fried (sha chao) form is preferred. Vinegar-processed Ji Nei Jin (cu ji nei jin) is favored when Liver-Spleen disharmony with poor digestion is the pattern.

Processing Methods

Processing method

Dry stir-fried over medium heat until the pieces puff up and become crispy and golden-yellow or slightly scorched.

How it changes properties

Stir-frying makes Ji Nei Jin crispy and easier to grind into powder. It develops an aromatic quality and a slightly astringent taste. The food-dissolving power is redirected toward strengthening the Spleen and stopping diarrhea. The astringent property is enhanced, making it better for securing essence and stopping enuresis. It loses some of the raw form's ability to dissolve stones and transform hard accumulations.

When to use this form

Preferred for everyday digestive weakness, Spleen Deficiency diarrhea, poor appetite, and for treating enuresis or seminal emission. This is the most commonly used clinical form.

Toxicity Classification

Non-toxic

Ji Nei Jin is classified as non-toxic in both classical literature and the Chinese Pharmacopoeia. The Ri Hua Zi Ben Cao explicitly states it is "ping, wu du" (neutral, non-toxic). No toxic components have been identified. It is composed primarily of keratin protein, trace digestive enzymes (pepsin and amylase), amino acids, and trace minerals. No special toxicity precautions are required at standard dosages.

Contraindications

Caution

Spleen deficiency without food stagnation (no actual accumulation to dissolve). Ji Nei Jin's digestive-dispersing action can further weaken a Spleen that has nothing to disperse, worsening the underlying deficiency.

Caution

Excessive stomach acid or acid reflux conditions. Ji Nei Jin promotes gastric secretion and increases stomach acid output, which can aggravate these conditions.

Caution

Concurrent use with tannin-rich herbs such as Da Huang (Rhubarb), Di Yu (Sanguisorba), and Bian Xu (Polygonum aviculare). The enzymes in Ji Nei Jin bind with tannins and lose their effectiveness.

Special Populations

Pregnancy

Generally considered safe at standard doses during pregnancy. Ji Nei Jin is sweet and neutral in nature with no known uterine-stimulating or teratogenic properties. However, its strong digestive-dispersing action means it should be used only when genuinely indicated (actual food stagnation) rather than as a routine supplement during pregnancy. Pregnant women should consult a qualified practitioner before use.

Breastfeeding

No specific contraindications during breastfeeding have been documented. Ji Nei Jin is a food-grade animal product classified as non-toxic and is commonly used in dietary therapy for mothers and children in China. Its gentle digestive-supporting action is unlikely to cause adverse effects through breast milk. It may actually be beneficial for postpartum women with poor appetite or digestive weakness, though a practitioner should guide its use.

Pediatric Use

Ji Nei Jin is one of the most commonly used herbs in pediatric TCM practice, particularly for childhood food stagnation and malnutrition (gan ji). It is considered safe and gentle for children. For infants and toddlers, dosages are typically reduced to 1-3g of ground powder mixed into food, porridge, or warm water. For older children (ages 3-12), 3-6g is standard. The powdered form is preferred over decoction for children, as it is easier to administer and considered more effective. Ji Nei Jin steamed egg custard (mixing 1-2g of powder into beaten egg before steaming) is a traditional pediatric preparation that makes it palatable for young children.

Drug Interactions

Tetracycline antibiotics: Ji Nei Jin may interfere with the absorption of tetracycline-class antibiotics. Concurrent use is not recommended.

Aspirin and niacin (nicotinic acid): Classical Chinese pharmaceutical references advise against concurrent use, though the precise mechanism is not well characterized.

Tannin-containing medications: The enzyme components in Ji Nei Jin can bind with tannins and become inactivated. Avoid concurrent use with tannin-rich drugs or supplements.

General note: Because Ji Nei Jin increases gastric acid secretion and accelerates gastric motility, it may theoretically alter the absorption kinetics of other orally administered drugs. People taking medications with narrow therapeutic windows should consult their healthcare provider.

Dietary Advice

Avoid tannin-rich foods and beverages while taking Ji Nei Jin, including strong tea, coffee, persimmons, and unripe apples, as tannins can bind to and inactivate its enzyme components. For best results in treating food stagnation, eat small, easily digestible meals and avoid greasy, heavy, or raw cold foods that would further burden the digestive system. When using Ji Nei Jin to support Spleen function, warm cooked foods such as congee and soups are ideal accompaniments.

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.