BL23 (Shèn Shū, “Kidney Shu”) is the Back-Shu of Kidney point of the Bladder Meridian. BL23 is located on the back, 1.5 cun lateral to the lower border of the spinous process of the second lumbar vertebra (L2). It tonifies Kidney Qi and Yin, strengthens the back, and benefits the ears.
BL23 is located on the back, 1.5 cun lateral to the lower border of the spinous process of the second lumbar vertebra (L2).
Oblique insertion medially 0.8-1.2 cun; caution for pneumothorax.
Tonifies Kidney Qi and Yin, strengthens the back, and benefits the ears.
Lower back pain, tinnitus, dizziness, impotence, frequent urination, asthma.
BL23, the Back-Shu point of the Kidney, is one of the most important points for tonifying Kidney Qi, Yin, and Yang, making it central to treating all Kidney deficiencies. It is renowned for strengthening the lower back and knees, benefiting the ears, and addressing reproductive and urinary issues. It is a primary point for chronic fatigue, impotence, infertility, frequent urination, and tinnitus. It is frequently paired with REN4 to powerfully tonify Kidney Qi and Essence.
BL23 is one of 67 points on the Bladder Meridian. Nearby points:
BL23 is located on the back, 1.5 cun lateral to the lower border of the spinous process of the second lumbar vertebra (L2).
BL23 tonifies Kidney Qi and Yin, strengthens the back, and benefits the ears. Common clinical indications include lower back pain, tinnitus, dizziness, impotence, frequent urination, asthma.
Oblique insertion medially 0.8-1.2 cun; caution for pneumothorax. Caution: ⚠ Pregnancy: avoid — may stimulate uterine contraction (miscarriage / early-labour risk). ⚠ Pneumothorax risk: oblique/shallow only, never deep perpendicular over the chest wall.
BL23 is a point on the Bladder Meridian (Zú Tài Yáng Páng Guāng Jīng).