Da Huang Zhe Chong Wan (Rhubarb and Eupolyphaga Pill)

What does Da Huang Zhe Chong Wan do?

Da Huang Zhe Chong Wan (Rhubarb and Eupolyphaga Pill) gradually breaks up severe, long-standing blood stasis — classically called “dry blood” (gan xue) — while nourishing the blood and yin that stasis of this severity has already damaged. It is a Jin Gui Yao Lue formula built around several insect- and worm-derived blood-breaking substances alongside Da Huang, combined as a pill rather than a strong decoction so that a deeply entrenched stasis can be worn down slowly in a patient who is often already depleted.

• Chief: Da Huang purges heat and breaks stasis, directing stagnant blood out through the bowels.
• Deputies (the “insect and worm” group): Tu Bie Chong (Eupolyphaga), Meng Chong (Tabanus/gadfly), Shui Zhi (Hirudo/leech), and Qi Cao (Holotrichia larva) are strong animal-derived blood-breakers, used together because chronic, deeply lodged stasis often does not respond fully to plant-based blood movers alone.
• Assistants: Tao Ren invigorates blood and moistens dryness; Gan Qi (processed lacquer resin) is a potent stasis-breaker included in small amount; Huang Qin clears the heat that chronic stasis generates; Xing Ren helps move qi downward and moistens, supporting the formula’s overall downward, purgative direction.
• Assistants (nourishing pair): Sheng Di Huang and Bai Shao nourish blood and yin, offsetting the drying, damaging potential of so many aggressive blood-breaking ingredients used together.
• Envoy: Gan Cao harmonizes the formula and moderates the toxicity and harshness of the stronger ingredients.

Source: Jin Gui Yao Lue; Bensky & Barolet, Formulas & Strategies (chief/deputy/assistant/envoy analysis). Traditional-use framing; not medical advice.

What is Da Huang Zhe Chong Wan used for?

Da Huang Zhe Chong Wan treats severe, chronic blood stasis with dryness and depletion — the Jin Gui Yao Lue’s “dry blood” (gan xue) pattern within one of the five taxations/consumptive-disease (xu lao) categories — marked by dry, rough, scaling skin and fixed abdominal masses in a generally emaciated, depleted patient.

• Skin and constitutional signs: dry, rough, scaly skin classically likened to fish scales, dark discoloration around the eyes, emaciation, and a generally malnourished appearance despite ongoing food intake.
• Abdominal masses: fixed, painful masses or lumps (zheng jia) in the abdomen from long-standing stasis.
• Gynecological presentation: amenorrhea in women, where stasis has blocked the Penetrating (Chong) and Conception (Ren) vessels.
• The classical paradox: despite describing a depleted, consumptive patient, the formula is built around strong purgative and blood-breaking herbs — appropriate here because the entrenched stasis itself, not simple deficiency, is what is preventing new blood from being generated.

Source: Jin Gui Yao Lue; Sacred Lotus sources & references (diagnostic profile); Bensky & Barolet, Formulas & Strategies. Traditional-use framing; not medical advice.