GB23 Flank Sinews

Reviewed by · Licensed Acupuncturist & TCM Physician · Last reviewed June 2026

GB23 (Zhejin, “Flank Sinews”) is an acupuncture point on the Gallbladder Channel Meridian. It is located on the lateral aspect of the chest, in the 4th intercostal space, 1 cun anterior to the mid-axillary line. This is located 1 cun anterior to YuanYe (GB22), which is 3 cun inferior to the apex of the axilla. It expands the chest, regulates Qi, and alleviates fullness and pain.

Location

On the lateral aspect of the chest, in the 4th intercostal space, 1 cun anterior to the mid-axillary line. This is located 1 cun anterior to YuanYe (GB22), which is 3 cun inferior to the apex of the axilla.

Needling

Oblique insertion 0.3-0.5 cun along the intercostal space. Avoid deep perpendicular insertion to prevent pneumothorax.

TCM functions

Expands the chest, regulates Qi, and alleviates fullness and pain.

Indications

Sudden fullness in the chest, inability to lie down, wheezing, shortness of breath, vomiting of undigested food, acid regurgitation.

Clinical notes

Zhejin is a local point on the Gallbladder channel primarily used for acute conditions of chest constraint and respiratory distress. Its classical indications point to its effectiveness for sudden chest fullness that is so severe it prevents the patient from lying down, accompanied by wheezing. It can also address rebellious Stomach Qi, such as vomiting and acid reflux, when it affects the chest and diaphragm.

In the classical sources

Classical text; the translation was prepared with AI and is not clinical advice.

《針灸逢源》 Zhēnjiǔ Féngyuán — Sources of Acupuncture & Moxibustion, Li Xuechuan, 1815 · 卷四 · 經穴考正 · 足少陽膽經穴考 · Source: jicheng.tw ↗

輒筋 在腋下三寸。 復前行一寸著脅。 側臥屈上足取之(針六分)治胸中暴滿不得臥太息多唾

According to this text, GB23 lies 3 cun below the armpit and 1 cun further forward against the ribs, taken lying on the side with the upper leg bent, needled 6 fen. It records use for sudden fullness in the chest with inability to lie down, sighing and much spitting.

《神灸經綸》 Shénjiǔ Jīnglún — Principles of Divine Moxibustion, Wu Yiding, 1851 · 卷之二 · 十二經脈起止 · 膽經四十三穴分寸 · Source: jicheng.tw ↗

輒筋 從淵腋下行復行前一寸三肋端

According to this text, GB23 is found by going down from Yuanye (GB22) and then 1 cun forward, at the end of the third rib.

《醫學綱目·刺灸》 Yīxué Gāngmù · Cìjiǔ — Outline of Medicine: Needling and Moxibustion, Lou Ying, 1565 · 卷之八·陰陽臟腑部 · 穴法下 · Source: jicheng.tw ↗

輒筋二穴,在腋下三寸,復前行一寸,著脅,足少陽脈氣所發。 針入六分,可灸三壯

According to this text, GB23 lies 3 cun below the armpit and 1 cun forward against the ribs, where the qi of the foot Shaoyang emerges. Needling is 6 fen, with 3 moxa cones.

《類經圖翼》 Lèijīng Túyì — Illustrated Wings to the Classified Canon, Zhang Jiebin, 1624 · 卷八 · 經絡(六) · 足少陽膽經穴 · Source: jicheng.tw ↗

輒筋 在腋下三寸,復前行一寸著脅。 刺六分,灸三壯。 主治太息多唾善悲,言語不正,四肢不收,嘔吐宿汁吞酸,胸中暴滿,不得臥

According to this text, GB23 lies 3 cun below the armpit and 1 cun forward against the ribs, needled 6 fen with 3 moxa cones. It records use for sighing, much spitting and sadness, disordered speech, limbs that cannot be moved, vomiting of old fluid with acid regurgitation, and sudden chest fullness preventing lying down.

On the Gallbladder Channel channel

GB23 is one of 44 points on the Gallbladder Channel Meridian. Nearby points:

Frequently asked questions

Where is GB23 located?

GB23 (Zhejin) is located on the lateral aspect of the chest, in the 4th intercostal space, 1 cun anterior to the mid-axillary line. This is located 1 cun anterior to YuanYe (GB22), which is 3 cun inferior to the apex of the axilla.

What is GB23 used for?

GB23 expands the chest, regulates Qi, and alleviates fullness and pain. Common clinical indications include sudden fullness in the chest, inability to lie down, wheezing, shortness of breath, vomiting of undigested food, acid regurgitation.

How is GB23 needled?

Oblique insertion 0.3-0.5 cun along the intercostal space. Avoid deep perpendicular insertion to prevent pneumothorax.

Which meridian is GB23 on?

GB23 is a point on the Gallbladder Channel Meridian (Zú Shàoyáng Dǎnjīng).

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⚠️ This page is for general education and is not medical advice. Acupuncture is a traditional practice; evidence varies by condition and study quality, and individual results differ. It does not replace diagnosis or treatment by a licensed professional. Always consult a qualified acupuncturist or physician.