Wu Mei Wan — Mume Pill / Black Plum Pill
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What is Wu Mei Wan?
Wu Mei Wan — Mume Pill, also known as Black Plum Pill — is a classical Shang Han Lun formula by Zhang Zhongjing (c. 220 CE) and one of the principal treatments for the Jue Yin stage in Six Stages theory: mixed upper-Heat and lower-Cold within the same patient. In modern Chinese herbal medicine it is one of the most clinically powerful formulas for complex chronic gastrointestinal disease, refractory irritable bowel syndrome, ulcerative colitis, and the Gu syndrome presentation behind chronic Lyme disease, chronic Epstein-Barr virus and long COVID.
I prescribe Wu Mei Wan as part of bespoke herbal formulas from pharmaceutical-grade granules sourced from Sun Ten in Taiwan.
Wu Mei Wan TCM pattern
Prescribed for the Jue Yin pattern of upper Heat with lower Cold, alongside chronic Liver-Spleen disharmony and Gu-syndrome features: persistent burning sensation in the chest with concurrent cold lower abdomen; alternating episodes of irritability and exhaustion; recurrent abdominal pain with both heat and cold features; on-and-off vomiting (sometimes with roundworm in the classical context); chronic diarrhoea with undigested food; cold extremities despite a hot interior; bitter taste; thirst with no real wish to drink; insomnia with vivid dreams; a tongue showing red tip with pale flabby body; a wiry pulse on one side and a deep weak pulse on the other.
Key herbs
A complex ten-herb composition combining warming, cooling, astringing and tonifying actions in deliberate counterbalance:
- Wu Mei (mume plum) — chief herb; sour-astringes the Liver and Intestines, calms roundworm, generates fluids
- Hua Jiao (Sichuan pepper) and Xi Xin — warm the middle and disperse cold
- Gan Jiang (dried ginger) and Fu Zi — warm and tonify Spleen and Kidney Yang
- Gui Zhi (cinnamon twig) — warms the channels and harmonises Yang
- Huang Lian and Huang Bai — clear upper Heat and Damp-Heat in the Intestines
- Dang Gui — nourishes Blood and supports the constitution
- Ren Shen — tonifies Qi and supports the upright
Formula actions
- Warms the middle and disperses Cold below
- Clears Heat above and resolves the Jue Yin disharmony
- Astringes the Intestines and stops chronic diarrhoea
- Calms roundworm and resolves parasite-associated abdominal pain (classical use)
- Restores the dynamic between Liver and Spleen in chronic complex disease
Conditions treated
- Biliary, pancreatic and intestinal ascariasis (the classical chief indication)
- Refractory irritable bowel syndrome with mixed hot-and-cold features (e.g. burning reflux with cold abdomen)
- Ulcerative colitis flares with both Heat and Cold signs
- Chronic recurrent diarrhoea with undigested food and exhaustion
- Gu syndrome presentations: chronic Lyme disease and co-infections, chronic Epstein-Barr virus, long COVID with persistent gastrointestinal and constitutional involvement
- Complex Crohn’s and IBD presentations alongside conventional gastroenterology
- Diabetes with both upper-burner Heat (thirst, sweating) and lower-burner Cold (frequent urination, cold feet)
- Stubborn vomiting in pregnancy with mixed Heat and Cold (used cautiously)
Cautions
Contraindicated in acute exterior conditions and in straightforward single-pattern diarrhoea (where simpler formulas are appropriate). Use cautiously in pregnancy (Fu Zi, Gui Zhi, Hua Jiao content) and only under qualified supervision; Sun Ten granules use fully processed Fu Zi at standardised doses. Patients with serious complex chronic disease (Lyme, IBD, autoimmune) should be co-managed with their consultant.
Wu Mei Wan is one of the most clinically rewarding but also one of the most diagnostically demanding formulas in the Chinese herbal canon. Identifying the correct Jue Yin pattern is essential — using this formula on a simple pattern can produce side effects, while a correct match can produce dramatic improvement.
Always consult a qualified Chinese herbalist registered with the Register of Chinese Herbal Medicine (RCHM). Online herbal consultations are available.
Prefer to be treated from home? Chinese herbal medicine online consultations are available throughout the UK and worldwide. After a full video consultation, Dr (TCM) Attilio D'Alberto formulates a bespoke herbal prescription and posts your Chinese herbs directly to your door.
