〔害〕甘,令人中满。有湿之人,若误用之,令成肿胀。故凡诸湿肿满胀病,及呕家酒
家,
咸不宜服。
〔利〕甘平,入心肺脾胃。生用气平,补脾胃不足,而泻心火;炙用气温,补三焦元气。
若
入和剂则补益,入汗剂则解肌,入凉剂则泻邪热,入峻剂则缓正气。姜附加之,恐其潜上;
硝黄加之,恐其峻下;皆缓之之意,稍止茎中作痛,节医毒肿诸疮。
〔修治〕以大径寸,而结紧断文者为佳,谓之粉草。细者名统草,补中炙用宜大者,泻
火生
用宜细者。白术、苦参、干漆为使。恶远志,反大戟、芫花、甘遂、海藻,然亦有并用者。
胡洽治痰癖,十枣汤加甘草。东垣治结核,与海藻同用。丹溪治劳瘵,与芫花同行。非妙达
精微者,不能知此理也。余疑远志与甘草相恶,必误载,以远志用甘草水浸用可知。
〔害〕惟专消导,破气损真。丹溪云∶泻痰,有冲墙倒壁之力,其为勇悍之气可知。凡
中气
虚弱,劳倦伤脾发为痞满者,法当调中益气,则食自化,痞自消,若再用此破气,是速其毙
也。胀满,非实邪结于中下焦,手不可按,七八日不更衣者,必不可用。挟热下利,亦非燥
粪留结者,必不可用。伤食停积,多因脾胃虚,不能运化所致,慎勿妄投。如元气壮实,有
积滞者,不得已用一二剂,病已即去之。若不识病之虚实,一概施用,损人真气,为厉不浅
。误投,虽多服参 补剂,亦难挽其克削之害也。故特表以为戒。孕妇尤忌。
〔利〕苦酸微寒,入肺、脾、胃、肝、大肠五经。破积有雷厉风行之势,泻痰有推墙倒
壁之
威。解伤寒结胸,除心下急痞。按枳实枳壳,性效不同。
〔修治〕皮浓而小者为枳实,完大者为枳壳,皆以翻肚如盆口状,陈者为良。采破,除
核,
微炙令干,切片,小麦麸炒焦去麸用。
[Harm] Licorice Root (Gancao) is sweet in taste and tends to cause fullness and distension in the middle jiao. In individuals with dampness, mistaken use can lead to swelling. Therefore, it is generally unsuitable for those suffering from various swellings and fullness due to dampness, as well as for patients with chronic vomiting or alcoholism.
[Efficacy] Licorice Root (Gancao) is sweet and neutral in nature, entering the Heart, Lung, Spleen, and Stomach meridians. When used raw, its qi is mild; it tonifies Spleen and Stomach deficiency while draining Heart fire. When honey-fried (Zhi Gancao), it becomes warm; it tonifies the Yuan Qi of the San Jiao. When added to harmonizing formulas, it provides tonification; when added to diaphoretic formulas, it releases the muscle layer; when added to cooling formulas, it drains pathogenic heat; when added to drastic formulas, it moderates the Zheng Qi (upright qi). If Ginger (Shengjiang) and Aconite (Fuzi) are added, there is a concern that the medicinal action may float upward; adding Licorice Root moderates this. If Mirabilite (Xiaoshi) and Rhubarb (Dahuang) are added, there is a concern that the purgative action may be too drastic; adding Licorice Root moderates this. These applications reflect the intention of "moderation," slightly relieving pain in the urethra and treating toxic swellings and various sores.
[Processing] The best quality is one with a diameter of about one cun, tight texture, and clear fracture lines, known as Fencao. The thinner ones are called Tongcao. For tonifying the middle and using honey-fried preparations, larger pieces are preferred; for clearing heat and using raw preparations, smaller pieces are preferred. Atractylodes Macrocephala Rhizome (Baizhu), Sophora Flavescens Root (Kushen), and Dried Lacquer (Ganqi) act as guiding or assisting herbs. It is antagonistic to Polygala Tenuifolia Root (Yuanzhi) and is incompatible with Euphorbia Lathyris Root (Daji), Genkwa Flower (Yuanhua), Kansui Root (Gansui), and Sargassum Thallus (Haizao), though they are sometimes used together. Hu Qia used Licorice Root in Shizao Tang to treat phlegm accumulation. Li Dongyuan used it with Sargassum Thallus (Haizao) to treat scrofula. Zhu Danxi used it with Genkwa Flower (Yuanhua) to treat consumptive disease. Only those who thoroughly understand subtle principles can comprehend this rationale. I suspect the claim that Polygala Tenuifolia Root (Yuanzhi) is antagonistic to Licorice Root is an error, given that Polygala Tenuifolia Root is often soaked in Licorice Root water before use.
[Harm] Zhi Shi (Immature Bitter Orange) specializes in resolving stagnation and breaking qi, thereby damaging true qi. Zhu Danxi stated: Zhi Shi has the power to demolish walls in clearing phlegm, indicating its fierce and aggressive nature. For cases of pi-man (fullness) caused by weak Middle Qi and spleen damage due to fatigue, the treatment should focus on regulating the middle and boosting qi, allowing food to digest naturally and fullness to resolve. Using such qi-breaking drugs in these cases would accelerate death. For distension, if it is not due to excess pathogens knotting in the lower jiao with abdominal rigidity and refusal to pressure, and constipation lasting seven to eight days, it must absolutely not be used. For diarrhea with heat signs, if not due to dry feces retention, it must absolutely not be used. Food stagnation is mostly caused by Spleen and Stomach weakness failing to transform and transport; do not administer recklessly. Only when the Yuan Qi is robust and there is actual stagnation, out of necessity, can one or two doses be used, stopping immediately after the illness resolves. If one fails to distinguish between deficiency and excess and applies it indiscriminately, it damages the body's true qi, causing significant harm. Once mistakenly administered, even large doses of Ginseng (Renshen) tonics cannot reverse the damage caused by its harsh depletion. This is specifically noted as a warning. Pregnant women are especially contraindicated.
[Efficacy] Zhi Shi (Immature Bitter Orange) is bitter and sour, slightly cold, entering the Lung, Spleen, Stomach, Liver, and Large Intestine meridians. It breaks accumulation with the speed of thunder and wind, and clears phlegm with the might of pushing down walls. It resolves chest binding (Jie Xiong) caused by Cold Damage (Shanghan) and eliminates urgent fullness below the heart. Note that Zhi Shi (Immature Bitter Orange) and Zhi Ke (Mature Bitter Orange) have different properties and effects.
[Processing] Those with thick skin and small fruit size are called Zhi Shi (Immature Bitter Orange); those that are complete and large are called Zhi Ke (Mature Bitter Orange). The best quality resembles an inverted bowl rim. Aged material is superior. After harvesting, slice open, remove seeds, lightly roast until dry, slice, and stir-fry with wheat bran until scorched, then remove the bran before use.