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Capítulo 32 de 33
神农本草经
This passage consists of scattered content from the Shennong Bencao Jing (Shennong's Classic of the Materia Medica), compiled by later generations from ancient books. It is primarily general introductory text rather than specific records of individual drugs. As it consists of lost fragments, it also contains annotations by later commentators and quotations from legends.
🌿 Total Number of Drugs Corresponds to the Heavenly Way
According to the ancient text, the three grades (san pin) of drugs total 365 kinds, modeled after the 365 days of the year—one degree corresponding to one day—thus completing one year. Later transmitted editions increased this to 730 kinds, incorporating the supplementary entries from the Mingyi Bielu (Miscellaneous Records of Famous Physicians). Song dynasty scholar Zhang Yuxi pointed out: the original Shennong Bencao Jing was written in red characters, while the Mingyi Bielu used black characters. Because transcription errors over time confused the red and black, the Bielu content was mistaken for the main text of the Bencao Jing. This reminds us that the "Bencao Jing" text we read today may contain later additions.
🌿 Formula Structure: Sovereign (jun), Minister (chen), Assistant (zuo), Envoy (shi)
Drugs within a prescription have distinct roles as sovereign, minister, assistant, and envoy, working together, restraining, and supporting one another. A common ratio is one sovereign, two ministers, three assistants, and five envoys; alternatively, one sovereign, three ministers, and nine assistants/envoys. These are not rigid rules but rather indicate that a prescription has an internal hierarchy of primary and secondary roles.
🌿 The Seven Relationships (Qiqing) of Drug Combination
Drugs possess yin-yang pairing and relationships such as mother-child and older-younger brother. In terms of origin, there are roots, stems, flowers, fruits, as well as plants, minerals, bones, and flesh. The compatibility relationships are divided into seven types: single action (danxing), mutual reinforcement (xiangxu), mutual assistance (xiangshi), mutual fear (xiangwei), mutual dislike (xiang’e), mutual antagonism (xiangfan), and mutual killing (xiangsha). When combining drugs, mutual reinforcement and mutual assistance are beneficial; mutual dislike and mutual antagonism should be avoided. If a toxic drug requires restraint, the relationships of mutual fear or mutual killing may be employed; otherwise, combined use is inadvisable. This reflects the ancients' preliminary summary of drug interactions.
🌿 Drug Properties and Processing
Drugs possess the five flavors—sour, salty, sweet, bitter, pungent—the four natures (qi)—cold, hot, warm, cool—and distinctions of toxic or non-toxic. Methods of drying in the shade or in the sun after harvest, the proper season for gathering, raw or processed preparation, place of origin, authenticity, and freshness or age all follow specific rules.
🌿 Selection of Dosage Forms
Depending on their properties, some drugs are suited to pills (wan), some to powders (san), some to decoction in water, some to steeping in wine, and some to preparation as thick extracts (gao). A single drug may be suitable for multiple forms, and others cannot be used in decoctions or wine preparations. The choice should follow the drug's nature and must not be violated.
🌿 Timing of Treatment and Prognosis
The ancients held that in treating illness, one must first investigate the cause and carefully examine the disease mechanism. If the five viscera are not yet deficient, the six bowels not yet exhausted, the blood and vessels not yet disordered, and the spirit not yet scattered, administering medicine will likely lead to recovery. If the disease is already fully established, only partial recovery may be possible. If the disease's momentum has already passed, life may be difficult to preserve. This emphasizes early treatment and prevention before disease, while also reflecting ancient, simple judgments about the prognosis of critical illnesses.
🌿 Use of Toxic Drugs
If toxic drugs are used to treat illness, the initial dose should be extremely small, as tiny as millet or grain. Once the disease subsides, administration should stop. If there is no improvement, the dose may be doubled; if still ineffective, it may be increased up to tenfold. In all cases, the guiding principle is regression of the disease—never overdose. This represents an early concept of dose escalation, but the specific "doubling" or "tenfold" instructions should not be copied mechanically today.
🌿 Cold/Heat Nature and Medication by Disease Location
Cold diseases are treated with hot drugs; hot diseases with cold drugs. Indigestion calls for emesis or purgation. What was called "ghost affliction (guizhu)” or "gu poisoning (gudu)" should be treated with toxic drugs. Abscesses, swellings, and tumors use appropriate wound medications, and wind-damp conditions call for wind-damp drugs, each according to what is appropriate. Here, “ghost affliction” and “gu poisoning” are ancient terms for certain infectious diseases, parasitic diseases, or poisoning, not references to actual ghosts and spirits.
🌿 Administration Timing
For disease above the diaphragm and chest, take medicine after eating; for disease below the heart and abdomen, take medicine before eating. For disease affecting the four limbs and blood vessels, the drug should be taken early in the morning on an empty stomach. For disease located deep in the bone marrow, the drug should be taken at night after a full meal. These are empirical summaries concerning the relationship between administration timing and disease location.
🌿 Examples of Major Diseases
The text enumerates numerous "major disease categories": wind stroke, cold damage (shanghan), alternating cold-heat malaria, sudden attack by pestilent qi (zhonge), cholera (huoluan), severe abdominal swelling, dysentery with diarrhea (changpi xiali), urinary and fecal obstruction, running piglet (bentun), qi rushing upward (shangqi), cough with counterflow, vomiting, jaundice, wasting-thirst (xiaoke, similar to diabetes), retained fluid (liuyin), food stagnation (pishi), hard accumulations (jianji), abdominal masses (zhengjia), terror, epilepsy and mania, ghost affliction, throat obstruction (houbi), tooth pain, deafness, blindness, incised wounds (jinchuang), sprains and fractures, abscesses and swellings, malignant sores, hemorrhoids and fistulas, goiter and tumors (yingliu); in men, five strains and seven impairments with vacuity and emaciation; in women, vaginal discharge, uterine bleeding (bengzhong), amenorrhea, and pudendal ulcers; injuries from insects, snakes, and gu poisons, and so forth. The text states these are "general headings and indicators," and specific variations must be assessed and treated according to proper principles.
🌿 The Three Grade Doctrine and Immortalist Tendencies
The original text quotes works such as the Baopuzi Neipian: superior drugs enable the body to become tranquil and life to be extended, even claiming one can "ascend to heaven as an immortal," "command all spirits," "grow feathers and fur on the body," or "summon a traveling kitchen at will." Middle drugs nourish one's nature; inferior drugs dispel disease and are said to repel poisonous insects and fierce beasts, and to ward off evil qi and demonic beings. Taizi said: superior drugs nourish life, middle drugs nourish nature, lower drugs nourish disease. Clearly, these contents have been significantly influenced by Daoist immortalist thought and do not entirely belong to the medical domain.
🌿 Legend of Shennong Testing Herbs
The text states that Shennong used a scarlet whip (zhe bian) to examine all the various herbs, mineral substances, bones, and flesh of the myriad things, "questioning each with the whip," and thereby learning their therapeutic actions and five flavors. It is said that in a single day he encountered seventy kinds of poisons. Clearly, this account contains legendary elements. Later annotations suggest that "scarlet whip" (zhe bian) and "hook" may be phonetic loans for "boiling to distinguish" (zhu bian) and "preparing/processing" (hou zhi), and that "questioning with the whip" might simply mean "to distinguish by inquiry," there being no need to regard such matters as bizarre fictions.
🌿 Highly Toxic Substances and Antidote Records
The text lists several highly toxic substances, such as gouwen (Gelsemium elegans), chi (kite), yinming, neitong, and zhen feathers, stating that they must not enter the mouth, nose, ears, or eyes, or they will kill a person. It is also said that for drugs of high toxicity like langdu (Euphorbia), batou, lilu (Veratrum), tianxiong wutou (Aconitum), and banmao (Mylabris), there are specific antidotes—zhan si, huo juice, lu soup, soybean, and rong salt, respectively. For toxic vegetables harming children, mother's milk may be used as an antidote, given by first drinking two sheng. These records reflect the ancients' vigilance regarding toxic drugs and early empirical antidote experiences but cannot be used as the basis for modern poisoning management.
🌿 Five Zhi (Mushrooms) and Mineral Drugs
The Five Zhi (sacred mushrooms) as well as cinnabar (dansha), jade ointment (yuzha), malachite (zengqing), realgar (xionghuang), orpiment (cihuang), mica (yunmu), and Taiyi Yu Yuliang were believed by the ancients to be suitable for single administration, enabling "flight, transformation, and longevity." Such sayings belong to the exaggerated discourse of alchemists (fangshi) and immortals and are not regarded as scientific facts in modern times.
🌿 Yin-Yang, Four Seasons, Five Flavors, and Five Elements
Spring and summer belong to yang; autumn and winter belong to yin. Spring is yang, and yang warmth engenders all things. Yellow essence (Huangjing, Polygonatum) and cangzhu (Atractylodes) were considered to be viable substitutes for grain and aid in famine relief, named "rice preserves" (mi fu). Theo drinciples of the five flavors: sour supplements the liver, nourishes the heart, and eliminates kidney disease; bitter supplements the heart, nourishes the spleen, and eliminates liver disease; sweet supplements the lungs, nourishes the spleen, and eliminates heart disease; pungent supplements the lungs, nourishes the kidneys, and eliminates spleen disease; salty supplements the lungs and eliminates liver disease. The five flavors correspond to the five elements, and the four limbs correspond to the four seasons. Liman life corresponds to the four seasons and five elements. Nourishing the child through the mother can extend life; guarding the mother through the child can dispel disease. Later annotations speculate that these contents originally composed a general introduction preceding the three grades of jade-stone, herb, and wood drugs but were later excised.
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