论曰五谷五菜五畜五果以至药石，皆能养性益寿延年却老疗疾蠲邪，然有损有益，有利
有害，不可不察，饮食之间，可不慎哉。本草论物性味，有相须相得相畏相恶，相得则良，
相须则用，相畏则制其毒，相恶则置而不用。然则饮食有毒，宜有解散除治之法也。
辨饮食毒。法
上凡饮食倾浇于地，地土涌起者，不可食，食之皆杀人。
治新中杂食，瘀实不消，心腹坚者。方
白盐（二两）
上一味，以水二大盏，同煎至一盏半，分三服，连并服取吐为效。
治因食中毒。黄龙汤方
上取灶底当釜直下，掘取赤土，捣罗为细末，以冷水调，随多少服之，或犀角水摩取汁
饮，大效。
又方
上取赤马溺，不计多少，每服饮一两盏。
又方
上取苦参一两半，以醇酒二升，同煎一升，去滓，令温饮之，得吐即愈，或取甘草汁蓝
汁饮之。
又方
上取桑上蕈，破作段，着釜中，以水五升，煮取二升，漉出澄清，以慢火再煎沸，经宿
不食，来晨空腹服三合则吐食瘕，每日服三合瘥，羸者减服之。
治食诸饼 百物中毒方
贝齿（一枚生）
上一味含之，须臾吐出所食之物，即瘥。
方又
甘草（生） 荠 （各二两）
上二味细锉，以水五盏，同煎取二盏，停冷去滓，分三服。
外台秘要论曰，岭南俚人毒药，皆因食得之，即觉渐不能食，或五更心中满胀，并背急
闷似瘴，微觉即急取一片银方寸余许含之，一宿其银变色，即是着毒药也。银色青是蓝药，
若黄是菌药，俚人有解疗者，畏人得法，在外预合药防之，或名三百头牛药，或言三百两银
药，并是常用。俚人不识本草，乃妄言之，其方如后未得此药，先以余药治之且令定。解毒
饮方
生姜 甘草（炙各一两）
上二味各拍碎，以水三盏，煎取一盏半，平旦空腹，分二服，服讫然后以别方治。
又方
常山（四两） 白盐（二钱）
上二味，以水一斗浸之一宿，以月尽日浸之，月一日五更，用土釜中煎之，勿令奴婢鸡
犬见。煎取二升，于平旦分为三服，服少时即吐，以铜盆盛之，看色青，以杖举得五尺不断
者，即是药未尽，候一日二日后，更进一剂乃良。
又方
都 藤（十二两此药岭南有之土人皆识呼为三百两银药甚细长其藤有高三尺者生切碎）
上一味，以水一升，酒二升，同煎取二升，分三服。如人行十里进一服，服进三服讫，
其药毒逐从大小便出，十日慎吃壅毒诸食，不瘥更服，以差为度。
治解腹内诸毒。二藤酒方
都 藤 黄藤（各握取二虎口长三寸并细锉）
上二味，以酒三大升，都入小罂罐中密封，用慢火围四边，烧之令沸，伺温出之，温服
常有酒色，无禁忌，若不获已，欲食俚人食者，先取甘草一寸，炙令熟，嚼咽汁，若食着毒
药即吐，根据前法治之，若经含甘草而不吐者非也，宜常取甘草十数截，随身带之以自防，岭
南人将生熟食物，并于火上炮炙食之，永无虑，若席上撒药，卧着因汗入肉，最难治，可常
自将净席随身，及匙着甘草解毒药行为妙。
Commentary states: The five grains, five vegetables, five meats, and five fruits, as well as medicinal herbs and minerals, can all nourish the nature, benefit longevity, resist aging, treat diseases, and dispel evil pathogens. However, they possess both beneficial and harmful aspects; there are advantages and disadvantages. One must not fail to examine them carefully. Regarding diet, how can one not be cautious? The *Bencao* (Materia Medica) discusses the properties and flavors of substances, noting relationships such as Xiangxu (mutual enhancement), Xiangde (mutual coordination), Xiangwei (mutual inhibition of toxicity), and Xiang'e (mutual antagonism). When substances coordinate (Xiangde), their efficacy is good; when they enhance each other (Xiangxu), their utility is realized; when they inhibit toxicity (Xiangwei), their poison is controlled; when they antagonize each other (Xiang'e), they should be discarded and not used. Given this, if food contains toxins, there should be methods for dissolving and eliminating them.
Methods for distinguishing dietary poisoning:
Wherever food or drink is poured onto the ground and the soil rises up, it should not be eaten; consuming it will cause death.
Formula for treating recent ingestion of mixed poisons resulting in stagnation, solid accumulation, indigestion, and hardness/fullness in the heart and abdomen:
Baiyan (Halitum, 白盐) (2 liang)
Take the above single herb, add two large cups of water, and decoct together until one and a half cups remain. Divide into three doses and take continuously until vomiting occurs, which indicates efficacy.
Huanglong Tang (Yellow Dragon Decoction) for treating poisoning due to food intake:
Obtain the red earth directly beneath the stove where the pot sits, dig it up, pound and sieve it into a fine powder. Mix with cold water and take an appropriate amount according to severity. Alternatively, rub rhinoceros horn (Xijiao, 犀角) in water to extract juice and drink it; this is highly effective.
Another formula:
Take urine from a red horse (Chima ni, 赤马溺), no specific quantity required. Drink one or two cups per dose.
Another formula:
Take Kushen (Sophorae Flavescentis Radix, 苦参) 1.5 liang. Decoct with two sheng of strong wine until one sheng remains. Filter out the dregs and drink while warm. Recovery occurs upon vomiting, or one may drink Gancao juice (Licorice Juice, 甘草汁) or Lanlan juice (Indigo Juice, 蓝汁).
Another formula:
Take mushrooms growing on mulberry trees (Sangshang xun, 桑上蕈), break them into segments, place in a pot, add five sheng of water, and boil down to two sheng. Strain and clarify. Re-boil over low heat. Do not eat overnight. Take three he of this decoction on an empty stomach the next morning to vomit out food masses (Shi jia, 食瘕). Taking three he daily leads to recovery. Reduce the dose for emaciated individuals.
Formula for poisoning from eating various cakes and other substances:
Beichi (Shell Tooth, 贝齿) (one piece, raw)
Hold the above single herb in the mouth. After a short while, spit out the ingested food, and recovery follows.
Another formula:
Gancao (Raw Licorice Root, 甘草) and Qini (Nephelii Fructus, 荠苨) (each 2 liang)
Finely chop the above two herbs. Add five cups of water and decoct together to obtain two cups. Allow to cool, filter out dregs, and divide into three doses.
The *Waitai Miyao* (Essential Prescriptions Worthy for Emergency [of Every] Value) states: In the Lingnan region, the Li people's poisons are ingested through food. Soon after, one feels gradually unable to eat, or experiences fullness in the heart at the third watch (Wugeng, 五更), along with tightness and stifling sensation in the back resembling miasma (Zhangqi, 瘴气). Upon slight discomfort, immediately take a piece of silver about one cun square and hold it in the mouth. Overnight, if the silver changes color, it indicates poisoning. If the silver turns blue-green, it is a plant-based poison (Lan yao, 蓝药); if yellow, it is a fungal poison (Jun yao, 菌药). The Li people who know antidotes fear others learning the method, so they prepare medicines in advance when traveling. These are sometimes called "Three Hundred Ox Poison" (Sanbai tou niu yao, 三百头牛药) or "Three Hundred Tael Silver Poison" (Sanbai liang yin yao, 三百两银药), both commonly used. Since the Li people do not understand the *Bencao*, they speak recklessly. Their formulas are as follows: Before obtaining this specific antidote, use other medicines first to stabilize the condition. Jiedu Yin (Antidote Drink, 解毒饮) Formula:
Shengjiang (Fresh Ginger, 生姜) and Gancao (Roasted Licorice Root, 甘草) (each 1 liang, roasted)
Crush the above two herbs separately. Add three cups of water and decoct to obtain one and a half cups. Take on an empty stomach in the morning, divided into two doses. After finishing, treat with another formula.
Another formula:
Changshan (Dichroae Radix, 常山) (4 liang) and Baiyan (Halitum, 白盐) (2 qian)
Soak the above two herbs in one dou of water overnight. Soak on the last day of the lunar month. On the first day of the new moon at the third watch, decoct in an earthen pot. Do not let servants, chickens, dogs, or other animals see it. Decoct to obtain two sheng. Divide into three doses in the early morning. Vomiting occurs shortly after taking. Catch the vomitus in a copper basin. If the color is green and it can be lifted five chi high with a stick without breaking, the poison is not yet exhausted. Wait one or two days, then administer another dose for best results.
Another formula:
Du Teng (Calamus Vine, 都藤) (12 liang; this herb grows in Lingnan, recognized by locals as "Three Hundred Tael Silver Poison," very slender, vines up to three chi tall, chopped when raw)
Decoct the above single herb with one sheng of water and two sheng of wine to obtain two sheng. Divide into three doses. Administer one dose after walking ten li. After completing three doses, the poison exits via urination and defecation. For ten days, avoid foods that cause stagnation and trap poison. If not recovered, continue taking until cured.
Er Teng Jiu (Two Vines Wine, 二藤酒) for resolving various internal poisons:
Du Teng (Calamus Vine, 都藤) and Huangteng (Tinosporae Caulis, 黄藤) (each a handful equivalent to the width of two tiger mouths, three chi long, finely chopped)
Place the above two herbs in a small jar with three da sheng of wine. Seal tightly. Heat gently around the sides until boiling. Remove when warm and take warm. It retains a wine-like color. There are no contraindications. If one must eat Li people's food, first take one cun of Gancao (Licorice Root, 甘草), roast until cooked, chew and swallow the juice. If poisoned food was eaten, vomiting will occur. Treat according to previous methods. If holding Gancao does not induce vomiting, it is not poisoning. It is advisable to carry several pieces of Gancao personally for prevention. People in Lingnan roast raw and cooked foods over fire before eating, never worrying. If poison is sprinkled on mats and enters the flesh through sweat while lying down, it is hardest to treat. It is best to always carry a clean mat and spoons coated with Gancao antidote.