Bamboo Juice (Bamboo Sap)

Traditional Use

Primary Actions

• Clears Heat and powerfully resolves phlegm - used for thick, sticky yellow sputum, chest oppression, wheezing, and severe phlegm-heat cough when milder bamboo medicinals such as Zhu Ru are not strong enough.
• Opens the orifices in phlegm-heat obstruction - classically selected for sudden unconsciousness, aphasia, locked jaw, or collapse patterns in which hot phlegm mists the Heart and blocks clear sensory function.
• Settles fright and stops convulsions - employed in pediatric febrile convulsions, epilepsy, or internal wind presentations where Heat and phlegm combine to agitate the spirit and channels.
• Penetrates the channels and collaterals - used for post-stroke paralysis, limb spasms, and stubborn phlegm lodged beyond the chest because its slippery sap is understood to travel where ordinary phlegm herbs do not.

Secondary Actions

• Moistens dryness while thinning difficult sputum, which makes it especially useful when hot phlegm is both tenacious and hard to expectorate.
• Is traditionally combined with fresh ginger juice so its extreme coldness does not injure the Stomach and its channel-penetrating action is enhanced.

Classic Formulas

• Ding Xian Wan (定痫丸) - a classical antiepileptic formula in which Zhu Li may be taken with ginger juice to address phlegm-heat, convulsions, and obstruction of the orifices.
• Qing Gong Tang (清宫汤) - warm-disease formula traditions add Zhu Li and pear juice when heat-phlegm clouds the Pericardium with agitation, delirium, or blocked consciousness.
• Qing Fei Tang (清肺汤) - respiratory heat-phlegm formula traditions use Zhu Li to dissolve stubborn phlegm, open the chest, and help descend constrained Lung Qi.

Classical References

• Ming Yi Bie Lu records Zhu Li as sweet, greatly cold, and non-toxic, indicating it for sudden wind-stroke, vexation, great Heat in the chest, and disorders of phlegm obstruction.
• Ben Cao Yan Yi praised Zhu Li as a substance able to treat phlegm lodged anywhere in the body, including the chest, limbs, organs, channels, and membranes, which underlies its channel-penetrating reputation.
• Danxi lineage teaching emphasized that Zhu Li should be taken with ginger juice because without ginger it does not effectively travel through the channels to reach lodged phlegm.