1. Classical Literature (from Shang Han Lun)

Tao He Cheng Qi Tang (桃核承气汤), or Peach Kernel Qi-Guiding Decoction, is a classical formula from Zhang Zhongjing’s Shang Han Lun (Treatise on Cold Damage). It belongs to the category of formulas that drain Heat and break up Blood stasis in the Lower Burner.

This formula addresses Blood buildup (Xu Xue) in the Lower Burner with Heat, a pattern that may follow an unresolved exterior condition when Heat binds with static Blood below. Typical signs include acute lower abdominal pain that is worse with pressure, night fever, restlessness or mania-like irritability, dark or purple tongue, and a deep excess or choppy pulse; there may also be amenorrhea or dark clotted bleeding.

Combining Tao Ren to break up Blood stasis, Da Huang and Mang Xiao to drain Heat and purge accumulation from the Lower Burner, Gui Zhi to warm and unblock the vessels so stasis can move, and Zhi Gan Cao to moderate the harsh draining herbs, Tao He Cheng Qi Tang effectively invigorates Blood, drains Heat, and unblocks the accumulation of static Blood in the lower abdomen.

2. Gynaecological Conditions (lower abdomen)

Tao Ren Cheng Qi Tang, while primarily known for lower burner blood stasis, demonstrates versatility in treating a range of conditions when applied with pattern differentiation and appropriate modifications.

For dysmenorrhoea and amenorrhoea caused by blood stasis obstructing the uterus, presenting with lower abdominal pain with resistance to pressure, a purple-dark tongue, or petechiae and ecchymosis, modified Tao Ren Cheng Qi Tang activates blood, resolves stasis, unblocks channels, and relieves pain to regulate the menstrual cycle effectively.

3. Male Urogenital Conditions

For chronic prostatitis and seminal vesiculitis caused by blood stasis obstructing the lower burner, presenting with heaviness, distending perineal pain, and dribbling, incomplete urination, this formula serves as a base for pattern-differentiated treatment, activating blood, resolving stasis, clearing heat, and promoting urination.

4. Psychiatric and Neurological Conditions

For certain psychiatric and neurological conditions like schizophrenia and mania, where internal blood stasis obstructs with clouded consciousness and manic agitation, alongside lower abdominal pain and dry stools, Tao Ren Cheng Qi Tang can be part of a comprehensive approach, including psychological counselling, to improve psychiatric symptoms.

1. Pathomechanism: Heat & Stasis Binding

This formula targets heat and stasis binding together in the lower burner. This often stems from an unresolved Taiyang disease, where heat moves inward and combines with blood. The resulting impaired qi-blood circulation in the lower burner leads to symptoms like urgent binding and pain in the lower abdomen.

2. Therapeutic Actions: Breaking & Draining

Its primary actions are breaking blood and expelling stasis, alongside draining heat and promoting defecation. By combining blood-activating stasis-resolving with purgative heat-clearing methods, it effectively eliminates lower burner stasis-heat and restores proper qi-blood circulation, thereby alleviating related conditions.

3. Clinical Indications: Lower Burner Accumulation

Tao Ren Cheng Qi Tang primarily treats the lower-burner blood accumulation pattern. Manifestations include urgent binding in the lower abdomen or body, spontaneous urination, mental disorientation (as if manic), agitation, delirious speech in severe cases, and fever intensifying at night. It also addresses blood stasis amenorrhea, dysmenorrhea, and presents with a sunken, replete, and choppy pulse.

1. Pharmacological Research on Tao He Cheng Qi Tang

Tao He Cheng Qi Tang (Peach Pit Decoction to Order the Qi), also known as Peach Pit Decoction, is a classic formula in Traditional Chinese Medicine that combines stasis-breaking herbs with heat-purging medicinals to treat blood stagnation in the lower jiao.

It effectively unblocks the bowels, purges heat, and relieves heat accumulation and abdominal fullness caused by blood stasis combined with heat. Key ingredients include Tao Ren (peach kernel), Da Huang (rhubarb), Gui Zhi (cinnamon twig), Mang Xiao (mirabilite), and Shen (licorice). This formula is a modification of Tiao Wei Cheng Qi Tang that adds strong blood-moving actions. Its bitter and salty properties focus on the lower jiao, making it especially suitable for acute conditions involving lower abdominal pain, retained lochia, or blood stasis with heat.

Modern research shows Tao He Cheng Qi Tang’s constituents (e.g., Taoren, Dahuang, Guizhi, Mangxiao, Zhigancao) have anticoagulant, microcirculation‑improving, anti‑inflammatory, antibacterial, pro‑motility, vasodilatory, purgative, immune‑modulating, and anti‑tumor actions, providing a pharmacological basis for its effects on blood stasis, inflammation, and bowel function.

2. Clinical Evidence & Applications

Clinical studies report benefits in cerebrovascular conditions (acute intracerebral hemorrhage, cerebral infarction) by improving neurological deficits, promoting hematoma absorption, and reducing edema, and in gynecological disorders (chronic pelvic inflammatory disease, endometriosis) by relieving pain and improving pelvic circulation and endocrine regulation; ongoing research explores broader applications across psychiatric, neurological, and urological fields.