Chinese Honeylocust Abnormal Fruit

Traditional Use

Primary Actions

• Expels phlegm and opens the orifices - Zhu Ya Zao is one of the harsh emergency herbs for thick, obstructing phlegm that locks the jaw, clouds consciousness, or causes phlegm gurgling in stroke, epilepsy, or other closed excess disorders.
• Forcefully dislodges stubborn turbid phlegm from the chest and throat - when taken internally in tiny doses or used as a nasal powder, it can provoke sneezing or vomiting to break up fixed phlegm that milder transform-phlegm herbs cannot move.
• Dissipates swelling and resolves toxicity - externally it is applied as a powder or vinegar paste for unruptured abscesses, boils, and other swollen lesions that need a sharp penetrating herb to draw the accumulation outward.
• Opens blocked passages above and below - older sources also use it for severe constipation, abdominal fullness, and focal obstruction when its acrid dispersing quality can move stubborn accumulations.

Secondary Actions

• Zhu Ya Zao is the seedless abnormal fruit of the honeylocust tree and is traditionally considered superior to the larger mature pod for dispersing Wind-Phlegm, even though the two share overlapping actions.
• This is usually a powder, pill, or external-application herb rather than a routine decoction substance because the crude saponins are strongly irritating in liquid form.

Classic Formulas

• Tong Guan San (通关散) - nasal insufflation powder using Zhu Ya Zao with Xi Xin, and sometimes Bing Pian, to trigger sneezing and rouse consciousness in acute phlegm obstruction.
• Xi Xian San (稀涎散) - classical pair of Zhu Ya Zao and Ming Fan used to induce vomiting of copious sticky phlegm in acute closed-type phlegm obstruction such as stroke with lockjaw and loss of consciousness.
• Zao Jia Wan (皂荚丸) - Jin Gui Yao Lue formula for cough with upward-rushing Qi and thick turbid phlegm that cannot be expectorated, highlighting the herb's deeper chest-phlegm application.

Classical References

• Me & Qi describes Zhu Ya Zao as warm, acrid, and salty, entering the Lung and Large Intestine channels, with strong actions of expelling phlegm, opening the orifices, reducing swelling, and clearing severe obstruction.
• Ming Yi Bie Lu records that pig-tooth-shaped pods are the superior form and uses them for abdominal fullness, cough with phlegm nodules, and other obstruction patterns, helping explain why the abnormal fruit became the preferred medicinal grade.
• Ben Cao Gang Mu states that blown or guided into the body it opens the upper and lower orifices, while taken internally it treats phlegm wheezing, swelling, fullness, and parasites and topically it disperses swelling and sores.