BL21 Weishu (Stomach Shu Point)

Location

1.5 thumb widths lateral to the du mai at the level of the lower border of the spinous process of the 12th thoracic vertebra.

Categories

• Back-Shu point of the Stomach

The classical groups this point belongs to, from Deadman, Al-Khafaji & Baker, A Manual of Acupuncture.

Indications

Conditions for which BL21 is listed as indicated. An indication list is a reference index, not a prescription – see the protocols below for sourced treatments.

TCM actions

What classical sources say BL21 does in the terms of Chinese medicine theory. These describe the point, not a condition.

Protocols using BL21

The 50 best-sourced of 153, ranked by strength of evidence. The count above is the full figure.

• Fatigue, Dizziness, Headache, Depression, Lassitude, Knee Pain, Head Vertex Pain, Dyspnea, Heaviness Lower Limbs, Lower Back Pain – LI04, ST36, SP06, HT07, BL15, BL17, BL18, BL20, BL21, BL23, BL26, KD03, PC06, GB20, LV03, CV06, CV12, GV20, GV24 (pubmed.ncbi.nlm.nih.gov ↗)
• Insomnia – ST25, ST36, ST40, SP06, SP09, HT07, BL14, BL15, BL18, BL20, BL21, BL23, KD03, PC06, GB20, GB41, LV03, CV04, CV06, CV12, CV17, GV20, GV23, GV24 (doi:10.1016/s0254-6272(09)60009-1 ↗)
• Cough Chronic – LI04, BL13, BL20, BL21, CV12, CV17, CV22 (doi:10.1016/s0254-6272(09)60022-4 ↗)
• Sputum, Cough Chronic, Appetite Poor – LI04, BL13, BL20, BL21, CV17, CV22 (doi:10.1016/s0254-6272(09)60022-4 ↗)
• Nausea, Bloating, Dyspepsia Functional – ST34, ST36, BL21, CV12 (doi:10.1155/2012/543943 ↗)
• Anxiety Procedural, Procedural Pain – BL21, BL22, BL23, BL52, GB25 (doi:10.1097/j.pain.0000000000000734 ↗)
• Hyperglycemia, Prediabetes, Impaired Glucose Tolerance – LI04, ST36, ST37, ST39, ST40, SP06, SP09, BL18, BL20, BL21, LV03, LV13, LV14, CV12, GV09 (doi:10.1186/s13063-017-2014-4 ↗)
• Overweight, Obesity Simple, Bmi Elevated – LI04, LI11, ST21, ST24, ST25, ST26, ST27, ST28, ST32, ST34, ST36, ST37, ST39, ST40, ST44, SP04, SP06, SP09, SP14, SP15, SP16, BL20, BL21, TB06, GB26, LV13, CV04, CV06, CV07, CV09, CV10, CV12, CV13 (doi:10.1155/2020/2367610 ↗)
• Diarrhea, Abdominal Pain, Ulcerative Colitis, Blood In Stool – ST25, ST36, SP04, BL20, BL21, BL23, BL25, KD03, CV04, CV12 (doi:10.1186/s12906-020-03101-4 ↗)
• Diarrhea, Abdominal Pain, Ulcerative Colitis, Blood In Stool – ST25, ST36, SP04, BL16, BL20, BL21, BL22, BL25, KD03, CV04, GV02, GV06 (doi:10.1186/s12906-020-03101-4 ↗)
• Cancer Gastric, Cancer Advanced, Post-chemotherapy – LU10, ST16, ST36, SP18, BL21, BL23, BL43, GB42, CV12 (doi:10.1155/2020/8274021 ↗)
• Abdominal Pain, Postoperative Pain, Post-Operative Nausea, Post-Operative Vomiting, Abdominal Bloating – LI04, ST36, ST37, BL21, BL27, PC06 (doi:10.2147/CMAR.S292325 ↗)
• Vomiting, Nausea, Abdominal Pain, Abdominal Bloating, Postprandial Fullness, Satiety Early, Gastroparesis Diabetic, Loss Of Appetite – ST21, ST25, ST36, SP06, BL18, BL20, BL21, BL23, PC06, CV12 (doi:10.1155/2021/6649331 ↗)
• Obesity, Obesity Abdominal, Overweight, Waist Circumference Elevated – LI11, ST24, ST25, ST36, ST40, BL20, BL21, TB06, CV09, CV12 (doi:10.1155/2022/4780019 ↗)
• Epigastric Pain, Dyspepsia Functional, Satiety Early, Burning Epigastric, Epigastric Postprandial Bloating – BL21, CV12 (doi:10.1155/2022/4824575 ↗)
• Loss of Appetite, Chemotherapy Nausea, Fatigue Cancer, Anorexia Cancer-associated – LI04, LI11, ST25, ST36, ST37, SP06, SP09, HT07, BL20, BL21, BL23, PC06, CV04, CV06, CV12, GV20 (doi:10.1155/2022/4251458 ↗)
• Headache, Sore Throat, Joint Pain, Muscle Pain, Fatigue Chronic, Sleep Unrefreshing, Memory Impaired, Fatigue Post-exertional, Cold Intolerance, Concentration Impaired, Yang Deficiency Spleen-kidney, Lumbar Weakness – BL11, BL13, BL14, BL15, BL17, BL18, BL19, BL20, BL21, BL22, BL23, BL25, GV02, GV03, GV04, GV05, GV06, GV07, GV08, GV09, GV10, GV11, GV12, GV13, GV14 (doi:10.1186/s12967-023-04250-z ↗)
• Anorectal Pain, Rectal Pain, Anorectal Bloating, Defecation Disorder – ST36, BL20, BL21, BL23, BL34, BL35, BL57, GB26, CV04, CV06, CV12, GV01, GV20 (doi:10.1097/MD.0000000000035462 ↗)
• Proteinuria, Nephropathy Diabetic, Renal Function Impaired, Hemorheology Abnormal – SP06, BL13, BL21, BL23, KD03 (doi:10.13702/j.1000-0607.20210036 ↗)
• Fatigue, Constipation, Insomnia, Weight Loss, Eating Disorder Arfid, Food Avoidance, Abdominal Bloating, Taste Disturbance, Tongue Pain – LI04, ST19, ST20, ST24, ST25, ST36, ST40, SP04, SP06, HT07, SI03, BL15, BL19, BL20, BL21, BL22, KD06, PC06, GV20 (doi:10.7759/cureus.61912 ↗)
• Parkinson's Disease, Bradykinesia, Rigidity Muscular, Posture Forward, Posture Lateral Trunk Bending, Dysphasia, Micrographia, Pisa Syndrome – ST40, SI03, BL21, BL62, KD06, LV03, LV08, LV13, GV20 (doi:10.7759/cureus.70860 ↗)
• Obesity, Appetite Excessive, Overweight, Appetite Increased – ST25, BL20, BL21, BL25, LV13, CV12 (doi:10.2147/DMSO.S487877 ↗)
• Anxiety, Fibromyalgia, Whole-body Pain, Mood Depressive – ST25, ST27, ST36, SP04, SP06, HT07, SI03, BL16, BL18, BL19, BL20, BL21, BL23, BL62, KD03, KD06, TB05, LV03, LV08 (doi:10.7759/cureus.74385 ↗)
• Knee Pain, Osteoarthritis Knee, Stiffness Knee – ST34, BL19, BL21, BL23, BL25, BL27, BL40 (doi:10.1186/s12906-025-04891-1 ↗)
• Airway Hyperresponsiveness, Asthma Intermittent, Asthma Mild – LU01, LU05, LU07, LU09, LU11, LI04, LI06, LI20, ST13, ST25, ST36, ST40, ST44, SP03, SP06, SP09, SP10, HT03, HT05, HT07, SI03, BL13, BL17, BL18, BL20, BL21, BL23, KD03, KD06, KD08, KD27, PC06, TB05, TB15, GB03, GB34, GB40, GB41, LV02, LV03, LV08, LV13, CV04, CV06, CV09, CV17, CV21, GV04, GV13 (doi:10.1186/s13052-015-0155-1 ↗)
• Hyperglycemia, Insulin Resistance, Type 2 Diabetes – LI04, LI11, ST36, SP06, SP09, SP10, BL13, BL17, BL20, BL21, BL22, BL23, BL52, KD03, CV04, CV06, CV12 (doi:10.3892/etm.2017.4379 ↗)
• Lactation Insufficiency, Breastfeeding Postpartum – ST18, ST36, SP06, SP10, SI01, BL20, BL21, PC06, LV03, LV14, CV06, CV17 (doi:10.22038/ijp.2020.54458.4305 ↗)
• Lactation Insufficiency, Breastfeeding Postpartum – ST18, ST36, SI01, BL18, BL20, BL21, LV03, LV14, CV12, CV17, GV14 (doi:10.22038/ijp.2020.54458.4305 ↗)
• Lactation Insufficiency, Breastfeeding Postpartum – LU01, LI04, ST17, ST18, SP20, SI01, BL17, BL18, BL20, BL21, GB21, CV17 (doi:10.22038/ijp.2020.54458.4305 ↗)
• Lactation Insufficiency, Breastfeeding Postpartum – LI04, ST11, ST17, SP20, SI01, BL17, BL18, BL20, BL21, GB21, CV16, CV17 (doi:10.22038/ijp.2020.54458.4305 ↗)
• Vomiting, Nausea, Chemotherapy Nausea, Stomach Yin Deficiency – ST36, SP04, BL21, KD06, PC06, CV04, CV12 (doi:10.1177/2164956119870444 ↗)
• Cancer Pain, Constipation Opioid-induced – BL18, BL19, BL20, BL21, CV12 (doi:10.3390/jcm12155083 ↗)
• Nasal Congestion, Allergic Rhinitis, Sneezing, Nasal Itching, Rhinorrhea Clear – ST36, BL12, BL20, BL21 (doi:10.1016/j.heliyon.2024.e29262 ↗)
• Hypogalactia, Breastfeeding Insufficiency, Lactation Postpartum – ST18, ST36, SP06, SP10, SI01, BL20, BL21, PC06, LV03, LV14, CV06, CV17 (doi:10.1186/s13643-025-02773-8 ↗)
• Hypogalactia, Breastfeeding Insufficiency, Lactation Postpartum – ST18, SI01, BL18, BL20, BL21, CV17, GV14 (doi:10.1186/s13643-025-02773-8 ↗)
• Hypogalactia, Breastfeeding Insufficiency, Lactation Postpartum – LU01, LI04, ST17, ST18, SP20, SI01, BL17, BL18, BL20, BL21, GB21, CV17 (doi:10.1186/s13643-025-02773-8 ↗)
• Hypogalactia, Breastfeeding Insufficiency, Lactation Postpartum – LI04, ST11, ST17, SP20, SI01, BL17, BL18, BL20, BL21, GB21, CV16, CV17 (doi:10.1186/s13643-025-02773-8 ↗)
• Abdominal Distension, Gastrointestinal Dysfunction, Constipation Postoperative – ST25, ST36, BL20, BL21, BL23, BL25, TB06, CV04, CV06, CV12, GV01 (doi:10.1136/bmjopen-2025-108309 ↗)
• Heartburn, Regurgitation, Gastroesophageal Reflux Disease (GERD) – ST36, BL21, CV12 (doi:10.13181/mji.v28i3.1850 ↗)
• Nausea, Bloating, Epigastric Pain, Dyspepsia Functional – ST25, ST36, ST44, SP04, SP09, BL20, BL21, PC06, LV03, CV12 (doi:10.1016/j.dcmed.2024.01.001 ↗)
• Epigastric Pain – ST36, SP04, BL20, BL21, PC06, CV12, CV13 (doi:10.13703/j.0255-2930.20240904-k0002 ↗)
• Insomnia, Speech Slurred, Dysphagia, Lower Limb Weakness, Breathlessness, Nasal Regurgitation, Ptosis Eye Left, Weight Loss Gradual, Fatigue Generalized – LI04, SP03, BL20, BL21, GB20, GV20 (doi:10.13045/jar.24.0052 ↗)
• Gastric Mucosal Injury Stress-induced – ST36, BL20, BL21, CV12 (doi:10.13193/j.issn.1673-7717.2015.09.005 ↗)
• Peptic Ulcer, Epigastric Pain – ST36, BL20, BL21, CV12 (doi:10.27294/d.cnki.gsxzc.2023.000054 ↗)
• Lumbar Pain, Lower Limb Pain, Lower Limb Numbness – ST26, SP11, BL21, GB26, GB27 (doi:10.13192/j.issn.1000-1719.2023.05.059 ↗)
• Spleen-qi Deficiency, Allergic Disease, Middle-qi Deficiency – BL20, BL21, LV13, CV12 (doi:10.13463/j.cnki.cczyy.2025.11.009 ↗)
• Intestinal Obstruction Postoperative Inflammatory Early – ST25, ST36, ST37, ST39, SP15, BL20, BL21, BL25, PC06, TB06, LV03, CV04, CV06, CV12 (doi:10.19613/j.cnki.1671-3141.2019.76.008 ↗)
• Stomach Pain, Gastric Pain – LU10, SP05, BL13, BL21 (doi:10.13457/j.cnki.jncm.2025.08.020 ↗)
• Gastric Ulcer, Mucosal Erosion – ST36, BL20, BL21 (doi:10.13703/j.0255-2930.1994.04.027 ↗)
• Epigastric Pain, Cold Spleen-stomach Deficiency – ST36, BL20, BL21, PC06, CV04, CV12 (doi:10.27127/d.cnki.ghlzu.2023.000698 ↗)

Most often selected alongside BL21

How many sourced protocols in the index pair each point with BL21. Corpus frequency, not a combination to use.

• BL20Spleen Shu Point110 protocols
• ST36Leg Three Miles108 protocols
• CV12Stomach Centre79 protocols
• PC06Inner Gate45 protocols
• SP06Three Yin Intersection44 protocols
• ST25Celestial Pivot44 protocols
• BL23Kidney Shu Point40 protocols
• BL18Liver Shu Point34 protocols
• CV04Original Qi Gate34 protocols
• LV03Great Surge31 protocols
• CV06Sea Of Qi29 protocols
• LI04Junction Valley27 protocols

Other points on the Bladder Meridian