甘微寒，小毒。
《本经》主咳逆上气，疗筋急恶疡，杀小虫。
发明 诸竹与笋皆甘寒无毒；惟竹叶受阴风烈日气多，故不无小毒。《本经》主咳逆上
气者，以其能清肺胃之热也。疗筋急恶疡者，以其能化身中之气也。气化则百骸条畅，何有
小虫之患乎。仲景治伤寒解后虚羸少气气逆，有竹叶石膏汤。《金匮》治中风发热，面赤头
痛，有竹叶汤，总取清肺胃虚热之义。
甘寒无毒。取竹茹法，选大青竹，磁盘刮去外膜，取第二层如麻缕者，除去屑末
用之。
发明 竹茹专清胃府之热，为虚烦烦渴、胃虚呕逆之要药。咳逆唾血，产后虚烦无不宜
之。《金匮》治产后虚烦呕逆，有竹皮大丸。《千金》治产后内虚烦热短气，有甘竹茹汤。
产后虚烦，头痛短气，闷乱不解，有淡竹茹汤。内虚用甘以安中，闷乱用淡以清胃，各有至
理存焉。其性虽寒而滑，能利窍，可无郁遏客邪之虑。
甘寒无毒。取竹沥法，以青竹断二尺许，劈开，火炙两头盛取用之。如欲多取
，以坛埋土中，湿泥糊好，量坛口大小用篾箍二道，竖入坛口，多着炭火于竹顶上炙之。
发明 竹叶兼行肌表，故能疗疮杀虫。竹茹专清胃府，故能止呕除烦。竹沥善透经络，
能治筋脉拘挛，痰在皮里膜外筋络四肢，非竹沥不能化也。纯阴之性，虽假火逼，然须姜汁
鼓动其势，方得应手取效。《千金》治风痱，身无痛四肢不收，志乱不甚，有竹沥饮子，详
《本经》疗筋急，专取竹沥之润，以濡之也。《千金》治四肢不收，则兼附、桂、羚羊之雄
，以振之也。一以舒急，一以收缓，妙用不可思议。或言竹沥性寒仅可施之热痰，不知入于
附桂剂中，未尝不开发湿痰寒饮也。惟胃虚肠滑，及气阻便闷者误投，每致呃逆不食，脱泻
不止而毙。阴柔之性不发则已，发则必暴卒，难挽回也。
味甘，性微寒，有小毒。
《神农本草经》记载其主治咳嗽气逆，治疗筋脉拘急及恶疮，能杀灭小虫。
【发明】各种竹子和竹笋皆味甘、性寒、无毒；只有竹叶因承受阴风和烈日之气较多，所以不免带有小毒。《神农本草经》说它主治咳嗽气逆，是因为它能清泄肺胃之热。说它能治疗筋脉拘急和恶疮，是因为它能化生人体中的气机。气机通畅则全身筋骨舒展，哪里还会有小虫为患呢？张仲景治疗伤寒病愈后身体虚弱消瘦、少气且气机上逆的病症，使用了竹叶石膏汤（Zhu Ye Shi Gao Tang, Bamboo Leaf and Gypsum Decoction）。《金匮要略》治疗中风发热、面红头痛，使用了竹叶汤（Zhu Ye Tang, Bamboo Leaf Decoction），这两者都是取用清泄肺胃虚热的意义。
味甘，性寒，无毒。
制作竹茹的方法：选取大青竹，用磁盘刮去外层表皮，取第二层如麻线般的纤维，除去碎屑末后使用。
【发明】竹茹专门清泄胃腑之热，是治疗虚烦口渴、胃虚呕吐气逆的要药。对于咳嗽气逆、咳血，以及产后虚烦，没有不适宜使用的。《金匮要略》治疗产后虚烦呕吐气逆，使用了竹皮大丸（Zhu Pi Da Wan, Large Bamboo Bark Pill）。《千金方》治疗产后内虚烦热、短气，使用了甘竹茹汤（Gan Zhu Ru Tang, Sweet Bamboo Sheath Decoction）。对于产后虚烦、头痛、短气、胸闷烦乱不解的情况，使用了淡竹茹汤（Dan Zhu Ru Tang, Light Bamboo Sheath Decoction）。内虚使用甘味药以安定中焦，胸闷烦乱使用淡味药以清泄胃热，其中各有深刻的道理。竹茹的性质虽然寒凉滑利，能通利窍道，但无需担心会郁遏留滞外邪。
味甘，性寒，无毒。
制作竹沥的方法：将青竹截断约二尺长，劈开，用火烘烤两头收集流出的汁液使用。如果想要多取，可将坛子埋入土中，用湿泥封好接口，根据坛口大小用两道竹篾箍紧，竖立插入坛口，在竹顶多加炭火烘烤。
【发明】竹叶兼走肌表，所以能治疗疮疡、杀虫。竹茹专清胃腑，所以能止呕除烦。竹沥善于透达经络，能治疗筋脉拘挛，痰浊位于皮里膜外及四肢筋络之中，非竹沥不能化解。竹沥性质纯阴，虽然借助火烤逼出，但必须加入姜汁（Jiang Zhi, Ginger Juice）来鼓动其势，才能应手取效。《千金方》治疗风痱（Feng Fei, Wind Paralysis），症状为身体无痛、四肢不能收持、神志混乱但不严重，使用了竹沥饮子（Zhu Li Yin Zi, Bamboo Sap Drink），详细说明了《神农本草经》治疗筋脉拘急，是专门取用竹沥的滋润之性来濡养筋脉。《千金方》治疗四肢不能收持，则兼用附子（Fuzi, Aconite Lateralis Radix Preparata）、桂枝（Guizhi, Cinnamon Twig）、羚羊角（Lingyang Jiao, Saiga Antelope Horn）等雄烈之品，以振奋阳气。一种用于舒缓拘急，一种用于收敛弛缓，妙用不可思议。有人说竹沥性寒仅可用于热痰，不知道将其加入附子、桂枝的方剂中，未尝不能开发湿痰和寒饮。只有对于胃虚肠滑，以及气机阻滞导致大便闷结的患者误用，往往会导致呃逆不止、无法进食、脱肛腹泻不止而死亡。阴柔的性质如果不发作则已，一旦发作必然暴烈猝急，难以挽回。
Sweet, slightly cold, with slight toxicity.
The *Shennong Bencao Jing* (Divine Farmer's Materia Medica) states it treats cough with upward rushing of Qi (ke ni shang qi), cures tendon stiffness and foul sores, and kills small insects.
[Invention] All bamboos and bamboo shoots are sweet, cold, and non-toxic; only bamboo leaves (Zhu Ye, Bamboo Leaves), having absorbed more Qi from yin winds and scorching sun, inevitably possess slight toxicity. The *Shennong Bencao Jing* says it treats cough with upward rushing of Qi because it can clear heat from the Lung and Stomach. It cures tendon stiffness and foul sores because it can transform Qi within the body. When Qi transforms and circulates freely, the bones and joints become smooth and unobstructed, leaving no room for harm by small insects. Zhang Zhongjing used Zhu Ye Shi Gao Tang (Bamboo Leaf and Gypsum Decoction) to treat post-febrile disease weakness, shortness of Qi, and rebellious Qi. In the *Jingui Yaolue* (Essential Prescriptions of the Golden Cabinet), Zhu Ye Tang (Bamboo Leaf Decoction) is used to treat wind-stroke with fever, red face, and headache. Both take advantage of the principle of clearing deficient heat from the Lung and Stomach.
Sweet, cold, non-toxic.
Method for preparing Zhu Ru (Bamboo Sheaths): Select large green bamboo, scrape off the outer membrane with a porcelain plate, take the second layer resembling hemp fibers, remove dust and powder, and use.
[Invention] Zhu Ru (Bamboo Sheaths) specifically clears heat from the Stomach Fu organ and is an essential herb for treating deficiency irritability, thirst due to deficiency, and vomiting/rebellious Qi due to Stomach deficiency. It is suitable for cough with hemoptysis and postpartum deficiency irritability. The *Jingui Yaolue* uses Zhu Pi Da Wan (Large Bamboo Bark Pill) to treat postpartum deficiency irritability and vomiting/rebellious Qi. The *Qianjin Fang* (Prescriptions Worth a Thousand Gold) uses Gan Zhu Ru Tang (Sweet Bamboo Sheath Decoction) to treat postpartum internal deficiency, irritability, heat, and shortness of Qi. For postpartum deficiency irritability, headache, shortness of Qi, and stifling confusion that does not resolve, Dan Zhu Ru Tang (Light Bamboo Sheath Decoction) is used. Internal deficiency is treated with sweet herbs to calm the Middle Jiao, while stifling confusion is treated with bland herbs to clear the Stomach; each has profound rationale. Although its nature is cold and slippery, promoting orifice patency, there is no need to worry about it trapping pathogenic factors.
Sweet, cold, non-toxic.
Method for preparing Zhu Li (Bamboo Sap): Cut green bamboo into sections about two chi long, split open, and roast both ends over fire to collect the liquid. To obtain larger quantities, bury a jar in the earth, seal the opening with wet mud, secure two bamboo strips around the mouth according to size, insert vertically into the jar mouth, and apply abundant charcoal fire on top of the bamboo to roast.
[Invention] Zhu Ye (Bamboo Leaves) acts on the muscle layer as well, thus treating sores and killing insects. Zhu Ru (Bamboo Sheaths) specifically clears the Stomach Fu, thus stopping vomiting and relieving irritability. Zhu Li (Bamboo Sap) penetrates meridians effectively, treating tendon and vessel spasms; phlegm located in the subcutaneous tissue, membranes, and limb meridians cannot be resolved without Zhu Li (Bamboo Sap). Its nature is purely Yin; although extracted via fire, it requires Jiang Zhi (Ginger Juice) to stimulate its action to achieve efficacy. The *Qianjin Fang* treats Feng Fei (Wind Paralysis), characterized by painless body, inability to control limbs, and mild mental confusion, using Zhu Li Yin Zi (Bamboo Sap Drink). This details how the *Shennong Bencao Jing*'s treatment of tendon stiffness relies on the moistening property of Zhu Li (Bamboo Sap) to nourish. The *Qianjin Fang*, when treating inability to control limbs, combines Fuzi (Prepared Aconite Root), Guizhi (Cinnamon Twig), and Lingyang Jiao (Saiga Antelope Horn) to invigorate Yang. One relaxes tension, the other tightens laxity; their subtle applications are inconceivable. Some claim Zhu Li (Bamboo Sap) is cold and only applicable to hot phlegm, unaware that when added to formulas containing Fuzi and Guizhi, it can indeed transform damp-phlegm and cold-fluid retention. However, if mistakenly administered to patients with Spleen/Stomach deficiency, loose bowels, or Qi obstruction causing stool stagnation, it often leads to persistent hiccups, inability to eat, prolapse, uncontrollable diarrhea, and death. The Yin-soft nature, if not activated, remains inert; once activated, it acts violently and suddenly, making recovery difficult.