BL21 (Wèi Shū, “Stomach Shu”) is the Back-Shu of Stomach point of the Bladder Meridian. BL21 is located on the back, 1.5 cun lateral to the lower border of the spinous process of the twelfth thoracic vertebra (T12). It harmonizes the Stomach, regulates Qi, and alleviates pain.
BL21 is located on the back, 1.5 cun lateral to the lower border of the spinous process of the twelfth thoracic vertebra (T12).
Oblique insertion medially 0.5-1 cun; caution for pneumothorax.
Harmonizes the Stomach, regulates Qi, and alleviates pain.
Stomachache, abdominal distention, vomiting, indigestion, acid reflux.
BL21, the Back-Shu point of the Stomach, is indispensable for harmonizing the Stomach and regulating its Qi, making it a primary point for a wide range of gastrointestinal disorders. It is particularly effective for conditions such as nausea, vomiting, acid reflux, epigastric pain, and indigestion, whether due to Stomach Qi rebellion or food stagnation. Its ability to alleviate pain makes it useful for acute Stomach discomfort. It is frequently paired with BL20 (Spleen Shu) to address the Spleen and Stomach together.
BL21 is one of 67 points on the Bladder Meridian. Nearby points:
BL21 is located on the back, 1.5 cun lateral to the lower border of the spinous process of the twelfth thoracic vertebra (T12).
BL21 harmonizes the Stomach, regulates Qi, and alleviates pain. Common clinical indications include stomachache, abdominal distention, vomiting, indigestion, acid reflux.
Oblique insertion medially 0.5-1 cun; caution for pneumothorax. Caution: ⚠ Pneumothorax risk: oblique/shallow only, never deep perpendicular over the chest wall.
BL21 is a point on the Bladder Meridian (Zú Tài Yáng Páng Guāng Jīng).