〔害〕苦寒之性，脾胃虚者犯之，洞泄不止。故凡小儿脾胃虚弱，不思食，及泄泻者，
禁用
。
〔利〕大苦大寒，功专清热杀虫，凉肝明目，镇心除烦，治惊痫，敷 齿湿癣。
〔修治〕出波斯国，状似黑锡，乃树脂也。采之不拘时月，味苦色绿者真。
密蒙花
〔利〕甘微寒，润肝燥，治目中赤脉，青盲云翳（音义，眼疾也），赤肿眵眼，小儿疳
气攻眼
。善疗眼疾，外无他用也。
〔修治〕产蜀中，树高丈余，叶冬不凋，其花繁密蒙茸，故名。二三月采花，拣净酒润
焙用
。
〔害〕其气大热，偏胜阳气，表里俱达。和营气，散表邪，出汗，实腠理，则桂枝为长。
故
仲景以治冬月伤风寒，病邪在表者。肉桂、桂心实一物也，只去皮耳，此则走里行血，除寒
、破血、平肝，入右肾命门，补相火不足。然大忌于血崩，血淋，尿血，阴虚，吐血，咯血
，鼻衄，齿衄，汗血，小便因热不利，大便因热燥结，肝热咳嗽，肺热，气不下行，每上见
热症，下见足冷，产后去血过多，产后血虚发热，小产后血虚寒热，阴虚五心烦热，似中风
，口眼歪斜，失音不语，语言蹇涩，手足偏枯，中暑昏晕，中热腹痛，妇人阴虚，少腹痛，
一切温病，热头疼，口渴，阳症发斑发狂，小儿痧疹，腹疼作泻，痘疮血热，干枯黑陷，妇
人血热，经行先期，妇人阴虚内热经闭，妇人阴虚，寒热往来，口苦舌干，妇人血热，经行
作痛，男妇阴虚，内热外寒，中暑泻利，暴注如火，一切滞下纯血，由于心经伏热，肠风下
血，脏毒便血，阳厥似阴，梦遗精滑，虚阳数举，脱阴目盲等三十余症，法并忌之。误投则
祸不旋踵。谨察病因，用舍在断，行其所明，无行其所疑，其慎毋尝试也。忌生葱、石脂。
〔利〕甘辛大热大温，气浓纯阳，入肝肾血分，补命门相火之不足。益阳消阴，治痼冷、
沉
寒、平肝、降气、引火归元，益火救元阳，温中扶脾胃，通血脉，下焦腹痛能除，奔豚疝瘕
立效。宣通百药，善堕胞胎，得人参、甘草、麦冬良。
〔修治〕去粗皮用，或研末冲入药煎，勿令泄气，或用米糁捣和为丸，先吞，或用枣肉
糊丸
，如前法吞，随症施用。去肉外皮，为桂心，枝小气薄者，为桂枝。又有一种观宾桂，今书
官桂，但能温里和营。
【芦荟】
【危害】芦荟具有苦寒的药性，脾胃虚弱的人服用会损伤脾胃，导致腹泻不止。因此，凡是小儿脾胃虚弱、食欲不振以及出现泄泻症状的，严禁使用。
【功效】芦荟味大苦、性大寒，功效专于清热杀虫，能凉肝明目，镇心安神以除烦，治疗惊风癫痫，外敷可治牙齿湿烂和癣疾。
【炮制】芦荟产自波斯国，形状像黑锡，实际上是树脂。采集时间不拘季节，味道苦、颜色绿的为真品。
【密蒙花】
【功效】密蒙花味甘、微寒，能滋润肝脏以祛燥，治疗眼中红丝（赤脉）、青盲症及云翳（音义：眼疾），以及眼睛红肿多眵（眼屎），治疗小儿疳气攻目。善于治疗眼疾，除此之外没有其他用途。
【炮制】产于蜀中地区，树木高一丈多，叶子冬天不凋落，花朵繁茂细密呈茸状，因此得名。二三月间采集花朵，拣选干净后用酒润湿，焙干后使用。
【肉桂】
【危害】肉桂气味大热，容易使阳气偏胜，通达表里。在调和营气、发散表邪、发汗、充实腠理方面，桂枝更为擅长。所以张仲景用桂枝治疗冬季感受风寒、病邪在体表的病症。肉桂和桂心实际上是同一种东西，只是去掉了外皮而已，肉桂则主要走里行血，祛除寒邪、破散瘀血、平抑肝阳，入右肾命门，补益相火不足。但是，肉桂严格禁忌用于以下三十多种病症：血崩、血淋、尿血、阴虚证、吐血、咯血、鼻衄（鼻出血）、齿衄（牙龈出血）、汗血、因热导致的小便不利、因热导致的大便燥结、肝热咳嗽、肺热、气机不下行、上部见热症下部见脚冷、产后失血过多、产后血虚发热、小产后面血虚引起的寒热往来、阴虚五心烦热、类似中风的症状、口眼歪斜、失音不语、语言蹇涩、手足偏枯、中暑昏晕、中热腹痛、妇人阴虚、少腹痛、一切温病、热性头痛、口渴、阳证发斑发狂、小儿痧疹、腹痛作泻、痘疮血热干枯黑陷、妇人血热导致月经先期、妇人阴虚内热导致的经闭、妇人阴虚寒热往来、口苦舌干、妇人血热导致经期疼痛、男女阴虚内热外寒、中暑泻利、暴注如注如火、一切滞下纯血（痢疾纯血）、由于心经伏热导致的肠风下血、脏毒便血、阳厥似阴、梦遗精滑、虚阳数举、脱阴目盲等三十多种病症，这些情况都应当忌用。误用则会招致灾祸，后果迅速而至。必须仔细审查病因，决定用药与否，遵循自己明白的道理行事，不要尝试自己不确定的疗法，务必谨慎，切勿随意尝试。忌与生葱、赤石脂同用。
【功效】肉桂味甘辛，性大热大温，气味浓厚，属纯阳之品，入肝肾血分，补益命门相火之不足。能益阳消阴，治疗久冷、沉寒，平肝降气，引火归元，益火救元阳，温中扶脾胃，通血脉，能消除下焦腹痛，对奔豚疝瘕有立竿见影的效果。能宣通各种药物，善于堕胎，与人参、甘草、麦冬配伍效果良好。
【炮制】去掉粗皮后使用，或者研成粉末冲入药汤煎服，注意不要让香气泄漏；或者用米糊捣和做成丸药，先吞服；或者用枣肉糊做成丸药，按前述方法吞服，根据病情施用。去掉肉的外皮称为桂心，枝条细小气味较薄的称为桂枝。又有一种观宾桂，现在书上称为官桂，只能温里和营。
[Alii Folium / Aloe]
[Harm] Aloe possesses a bitter and cold nature. If taken by those with weak Spleen and Stomach, it may cause persistent diarrhea (Dongxie). Therefore, it is strictly contraindicated for children with weak Spleen and Stomach who have poor appetite or suffer from diarrhea.
[Efficacy] Aloe is extremely bitter and cold. Its function specializes in clearing heat and killing parasites, cooling the Liver to brighten the eyes, calming the Heart to relieve irritability, treating convulsions and epilepsy, and applying externally to treat damp tinea of the teeth and tinea corporis.
[Processing] Aloe originates from Persia. It resembles black tin and is actually a resin. It can be harvested at any time; the genuine product is bitter in taste and green in color.
[Mimenghua / Flos Buddlejae Officinalis]
[Efficacy] Mimenghua is sweet and slightly cold. It moistens the Liver and dries dampness, treating red veins in the eyes (Chimai), blindness (Qingmang) and corneal opacities (Yunyi [phonetic meaning: eye disease]), red and swollen eyes with excessive discharge (Shizhiyan), and treating pediatric malnutrition attacking the eyes (Ganqi Gongyan). It excels in treating eye diseases and has no other known uses outside of this scope.
[Processing] It is produced in Shuzhong (Sichuan region). The tree grows over one zhang high, its leaves do not fall in winter, and its flowers are dense and fluffy, hence the name. Flowers are harvested in the second and third lunar months, cleaned, moistened with wine, and baked before use.
[Rougui / Cortex Cinnamomi]
[Harm] Rougui has a strong hot qi that tends to hyperactivate Yang Qi, penetrating both interior and exterior. For harmonying Ying Qi, dispersing exterior pathogens, inducing sweating, and consolidating Cou Li (interstitial spaces), Guizhi (Ramulus Cinnamomi) is superior. Thus, Zhang Zhongjing used Guizhi to treat wind-cold injury in winter where pathogens remain in the exterior. Rougui and Guixin (Cortex Cinnamomi Preparatus) are essentially the same substance, differing only in that Guixin has the outer bark removed. Rougui travels inward to move blood, dispel cold, break blood stasis, and pacify the Liver. It enters the Right Kidney and Mingmen (Gate of Vitality) to tonify insufficiency of Ministerial Fire. However, it is strictly contraindicated in more than thirty conditions, including: metrorrhagia (Xuebeng), hematuria due to damp-heat (Xuelin), hematuria (Niaoxue), Yin deficiency, hematemesis (Tuxue), hemoptysis (Kexue), epistaxis (Bini), gingival bleeding (Chini), hematohidrosis (Hanxue), dysuria due to heat, constipation due to heat, cough due to Liver heat, Lung heat, failure of Qi to descend, upper heat symptoms with cold feet, postpartum blood loss, postpartum fever due to blood deficiency, chills and fever after miscarriage due to blood deficiency, five-palm heat due to Yin deficiency, stroke-like symptoms, facial paralysis (mouth and eye deviation), aphonia, dysarthria, hemiplegia, heatstroke with fainting, abdominal pain due to heat, female Yin deficiency with lower abdominal pain, all warm diseases, heat-type headache, thirst, Yang syndrome with macules and mania, pediatric pox/rash, abdominal pain with diarrhea, bloody heat in smallpox leading to dry, dark, and depressed lesions, female blood heat causing early menstruation, female Yin deficiency with internal heat causing amenorrhea, female Yin deficiency with alternating chills and fever, bitter taste and dry tongue, female blood heat causing dysmenorrhea, male and female Yin deficiency with internal heat and external cold, heatstroke with diarrhea, sudden profuse watery diarrhea like fire, all types of bloody dysentery (Zhixia Chunxue) due to latent heat in the Heart channel, intestinal wind bleeding (Changfeng Xiexue), visceral toxin rectal bleeding (Zangdu Bianxue), Yang collapse resembling Yin, nocturnal emission and seminal leakage, frequent erection due to deficient Yang, Yin exhaustion with blindness, etc. All these conditions require avoidance. Misapplication will bring swift disaster. One must carefully investigate the etiology, decide on treatment based on judgment, act according to clear understanding, and avoid uncertainty. Be extremely cautious and do not experiment blindly. Contraindicated with raw scallion (Cong Bai) and Halloysitum Rubrum (Shizhi).
[Efficacy] Rougui is sweet and acrid, extremely hot and warm. Its qi is thick and purely Yang. It enters the Blood aspect of the Liver and Kidney, tonifying insufficiency of Ministerial Fire in Mingmen. It benefits Yang and eliminates Yin, treats chronic cold and deep-seated cold, pacifies the Liver, directs Qi downward, guides fire back to its source (Yin Huo Gui Yuan), benefits fire to rescue primal Yang, warms the middle and supports the Spleen and Stomach, unblocks blood vessels, relieves lower jiao abdominal pain, and is effective for Ben Tun (running piglet sensation) and hernia masses (Shenjia). It promotes the efficacy of various herbs, induces abortion, and works well when combined with Renshen (Ginseng Radix), Gancao (Licorice Root), and Maidong (Ophiopogonis Tuber).
[Processing] Remove the rough bark before use. It can be ground into powder and added to decoctions, ensuring the aroma is not lost. Alternatively, it can be mixed with rice paste to form pills, swallowed first, or formed into pills with jujube flesh paste, swallowed as described above, administered according to symptoms. Removing the outer bark yields Guixin. Small branches with thinner aroma yield Guizhi. There is also a variety called Guanbing Gui, now referred to as Guiguan Gui, which only warms the interior and harmonizes Ying Qi.