The Ancient Origins and History of Chinese Pharmacology

Chinese pharmacology is even more distinctive than any other branch of histories/ancient-chinese-medicine.html. This is no accident, because knowledge of pharmacology can rightly be called the most ancient part of the whole tradition. Chinese herbal medicine — the systematic use of plants, minerals and animal products to treat disease — grew out of thousands of years of observation and today sits at the heart of what is now called Traditional Chinese Medicine (TCM).

What is Chinese pharmacology

Chinese pharmacology is the study and clinical use of medicinal substances — Chinese Herbal Medicines (CHMs), animal-derived remedies and minerals — within the framework of Traditional Chinese Medicine. It covers the identification of drug materials, medicinal plants and the treatment of illness through prepared remedies, and it forms one of the five main practices of TCM alongside acupuncture, tuina massage, tai chi and lifestyle counseling.

Unlike Western biomedicine, which usually isolates a single active compound aimed at a single target, Chinese Herbal Medicines are typically multi-component and multi-target. A formula combines several herbs so that the ingredients reinforce, moderate or counteract one another, aiming to restore balance in the whole body rather than suppress an isolated symptom. This prevention-focused, root-cause philosophy is what most sharply distinguishes Chinese pharmacology from symptom-oriented conventional treatment.

History of the development of Chinese pharmacology

Chinese pharmacology began to develop long before the common era, encompassing the study of medicinal substances and medicinal plants and the cure of various diseases with prepared remedies. The tradition is often described as a body of medical practice reaching back roughly 5,000 years, transmitted first through legend and later through a continuous written record of materia medica texts.

The legend of Fuxi

The legend of Fuxi — said to be the first emperor, who supposedly lived at the start of the third millennium BC — holds that he taught people to treat illness by taking medicines. This origin story places the beginnings of Chinese drug lore among the founding figures of Chinese civilization, long before any surviving text.

Emperor Shennong and the first herbal

Emperor Shennong, the second legendary ruler, is said to have sent his officials out to gather and bring back samples of every kind of metal, stone and plant. Studying their appearance, taste and smell, he sorted them into categories that became the earliest scheme of drug classification in China.

• cooling ("han"),
• heating ("re"),
• moderately warm ("wen"),
• neutral or indifferent ("ping").

The book attributed to this ancient hero, "Shennong Bencao" ("On the Properties of Medicinal Substances"), describes 362 medicines. All of them are divided into three grades:

• "superior" ("shang pin"),
• "medium" ("zhong pin"),
• "inferior" ("xia pin").

The first grade was also called royal, the second official or ministerial, and the third included harmful substances such as poisons. Shennong, who received the title "extraordinary physician," is said by legend to have tasted seventy poisonous drugs in a single day — an early acknowledgment that potent remedies carry toxicity as well as healing power.

Shennong is likewise regarded as the creator of the first herbal, a catalogue of more than 100 medicinal plants that seeded China's long tradition of plant-based medicine.

Classification of medicinal substances according to Shennong

Shennong's grading of remedies into superior, medium and inferior classes was more than a filing system; it encoded early ideas about safety and dosage. Superior "royal" drugs were thought to be tonic and safe for long use, medium "official" drugs treated specific disorders, and inferior drugs — the toxic ones — were reserved for short, targeted attacks on serious disease. The parallel scheme of cooling, heating, warming and neutral natures gave practitioners a way to match a remedy's energetic quality to a patient's condition, a principle that still governs how herbs are prescribed today.

Other ancient sources of pharmacological data

Another source of pharmacological data is the "Shijing," a collection of poems about events of the twelfth century BC. It too describes many of the medicines used by physicians at the beginning of the Zhou dynasty (12th–3rd centuries BC), showing that drug knowledge was already woven into everyday cultural life. Alongside these works, the "Huangdi Neijing" — the Yellow Emperor's Inner Classic — later set out the philosophical scaffolding of qi, yin and yang and the meridian channels that the pharmacology was meant to serve.

Chinese pharmacology of the Qin and Han eras

More reliable information about Chinese pharmacology dates to the Qin and Han eras (246 BC – AD 220). This period of unprecedented political unity, following the age of the Warring States, was marked by rapid growth in economy and culture, and it lifted drug knowledge from legend into documented practice.

By then physicians were already making wide use of preparations of plant, animal and mineral origin — for example mercury for treating skin diseases — showing that the three great classes of Chinese materia medica were established early.

The development of pharmacology in the 2nd century BC

The extraordinarily vigorous growth of Chinese pharmacology is shown by the fact that in the 2nd century BC the population of Shandong province had 10,000 prescriptions at its disposal. At that time a special protocol for taking medicine was also established, one entirely in keeping with the customs of feudal society.

Before a lord took a medicine, its effect had to be tested on a vassal; the vassal in turn did so after an official kept in service specifically for this purpose. This chain of tasting served as a crude form of safety testing — a distant ancestor of modern toxicity screening, which today may use models such as zebrafish larvae to assess the risks of herbal and mineral drugs.

Such a procedure made it possible not only to establish the harmfulness or toxicity of a given medicine but also to draw certain conclusions about its properties. The first detailed description of poisons — around 100 kinds — dates to roughly the mid-7th century.

The first book on pharmacology, "Shennong Bencao"

It is to this period that the creation of China's first specialized book on pharmacology, "Shennong Bencao," belongs. It records more than 300 kinds of medicines with a detailed account of the cases in which each was used.

This book has survived to the present day. Having checked the data it contains, modern specialists have confirmed the correctness of many prescriptions more than two thousand years old — a striking example of how much traditional herbal knowledge withstands scientific scrutiny.

In the Middle Ages, when Europe was still treating illness with incantations and prayers (more detail: health/types-of-medicine-empirical-medicine.html), histories/chinese-medicine-of-middle-ages.html already possessed such a rich literature on medicine and pharmacology that an urgent need arose to revise and systematize it.

Systematization of medical literature in 659

In 659, by imperial command, twenty-two leading pharmacists gathered to systematize the medical literature. The result of their many years of painstaking work was the compilation of a comprehensive materia medica that was adopted as the principal source of data on medicinal substances and their use — the first state pharmacopoeia in the world, predating comparable European efforts by centuries.

Among many other remedies, this pharmacopoeia describes such effective agents as sulfur for treating scabies and a range of anti-dysenteric drugs, in particular gentian; it also mentions preparations that, as has now been established, contained large amounts of vitamins. The first medical teaching institutions of the age, the "Tai Yi Shu," included pharmaceutical departments with a staff of fifty-two instructors. In 1292 an independent pharmacological institute was opened in China — the first educational establishment of its kind anywhere.

Conceptual foundations and theory of Chinese pharmacology

The conceptual framework of Chinese pharmacology rests on the same philosophical foundations as the rest of Traditional Chinese Medicine: qi as the vital life force flowing through meridian channels, the balance of yin and yang, and the Five Elements Theory. Health is understood as harmony among these forces, and illness as their imbalance, so a remedy is chosen for how it shifts the body back toward equilibrium rather than for a single chemical action.

The Five Elements — wood, fire, earth, metal and water, sometimes called the five phases — form a system of correspondences linking organs, tastes, seasons, emotions and constitution types. Each herb is assigned a nature (cooling, warming, neutral) and a flavour that connects it to particular elements and organs, which is why a formula is built to resonate with a patient's overall constitution and not merely their complaint. This mind-body-spirit integration underlies the tradition's emphasis on treating the person, not the disease alone.

Diagnostic principles in Chinese herbal practice

Diagnosis in Chinese herbal practice proceeds through syndrome differentiation rather than through a single-name disease label. The practitioner observes the tongue, listens, questions the patient about lifestyle and emotions, and reads the pulse to identify a pattern of disharmony — an excess or deficiency of qi, blood, yin or yang in specific organ systems.

From that pattern the practitioner assembles an individualized formula, adjusting the herbs as the pattern shifts. Because the same biomedical illness may correspond to several different TCM syndromes, two patients with the same Western diagnosis can receive quite different prescriptions — a personalization that reflects the multi-target logic of Chinese Herbal Medicines and their attention to constitution and element type.

Types of medicinal substances in Chinese pharmacology

Chinese pharmacology draws its materia medica from three great sources — plants, animals and minerals — each prepared into remedies such as decoctions, powders, pills, tinctures and, in modern practice, granules and capsules. The way a substance is collected, dried, roasted or combined with others changes its properties, so processing is treated as part of the medicine itself.

Medicinal plants

Medicinal plants are the backbone of Chinese herbal medicine and the largest of the three classes. Roots, bark, flowers, seeds and whole herbs are combined into layered formulas in which a "chief" herb addresses the main pattern while "deputy," "assistant" and "envoy" herbs support it, reduce toxicity and direct the formula to the target organ. Gentian for dysentery and gaultheria (chaulmoogra) oil for leprosy are examples recorded in the classical texts, and plant medicines remain the focus of most modern pharmacological research into TCM.

Substances of animal origin

Substances of animal origin have been used in Chinese pharmacology since the Qin and Han eras, ranging from insects and shells to specialized tissues. While some animal ingredients remain part of the traditional repertoire, demand for them has driven a serious modern problem: wildlife smuggling and the illegal trade in endangered species. Contemporary practice increasingly substitutes cultivated or synthetic alternatives, and reputable practitioners avoid ingredients tied to threatened wildlife.

Mineral substances and their use

Mineral substances formed a recognized class of Chinese medicines from the earliest times, with mercury used for skin disease and sulfur prescribed for scabies. Minerals were valued for potent, fast-acting effects, but they also carried the greatest risk, which is why several appeared among Shennong's "inferior" grade. Modern toxicology has confirmed those ancient cautions, and mineral remedies are now the ingredients most scrutinized for heavy-metal safety.

Toxic substances and the first description of poisons

Toxic substances were catalogued in Chinese pharmacology remarkably early: the first detailed description of poisons, covering around 100 kinds, dates to the mid-7th century, and the feudal tasting protocol described above was in effect an empirical toxicity assessment. The tradition never denied that many effective drugs are dangerous in the wrong dose — the grading of remedies into royal, official and toxic classes was itself a safety framework, and modern quality assurance builds on the same recognition that potency and toxicity often travel together.

The first Chinese prescription reference and later materia medica

After the 11th century there was great progress in the technology of preparing dosage forms, and it is to this time that measures for pharmacological standardization belong. The first Chinese prescription reference, "Prescriptions of Ready-Made Medicines," gave not only rules for using the most common forms but also instructions for collecting and processing raw drug material.

The greatest achievement of national pharmacology is the "Compendium of Materia Medica" (Bencao Gangmu), a work of 52 volumes and 62 chapters created by the great Chinese physician Li Shizhen in the second half of the 16th century, during the Ming dynasty. This was a time when, through extensive domestic work and growing contact between China and other countries, pharmacology was enriched with much new data.

To gather this material, and to critically rework everything accumulated by the folk experience of previous generations, Li Shizhen needed thirty years. His book described 1,892 kinds of medicines and was the most complete summary of pharmacological knowledge at the end of the 16th century. Among other things, it recommended prescriptions for such grave diseases as leprosy (using chaulmoogra oil) and syphilis (using mercury and arsenic).

Chinese pharmacology did not, in essence, rise above the level reached under Li Shizhen. histories/china-17-18-centuries.html the rulers of the Qing (Manchu) dynasty pursued a "closed-door policy" that slowed the country's cultural development and caused a national medicine, once far ahead of foreign medical science, to fall behind. This situation continued until the victory of the people's revolution and the proclamation of the People's Republic of China in 1949, after which the tradition entered a new phase of modernization.

Acupuncture, moxibustion and other methods of Chinese medicine

Chinese pharmacology never worked in isolation; it forms one arm of a wider system whose other pillars are acupuncture, moxibustion, cupping, tuina massage and mind-body exercise. Acupuncture inserts fine needles at points along the meridians to regulate the flow of qi, moxibustion warms those points with burning mugwort, and cupping and acupressure act on the same channels through suction and pressure.

These techniques are routinely combined with herbal formulas so that the herbs address the internal pattern while acupuncture and moxibustion adjust qi flow directly. Alongside them, TCM prescribes lifestyle modalities — nutrition, meditation, tai chi and qigong, and even music therapy using healing tones — all aimed at restoring balance. The five main practices of TCM are usually listed as herbal medicine, tuina, tai chi, acupuncture and lifestyle counseling.

Clinical efficacy of traditional medicines

The clinical efficacy of traditional Chinese medicines is now studied through systematic reviews and meta-analyses of Chinese Herbal Medicines, which look for reproducible effects on defined conditions. The evidence is mixed: some formulas show measurable benefit for specific complaints, while others lack the high-quality trials needed to confirm the traditional claims. The multi-component, multi-target nature of CHMs makes them harder to evaluate with methods designed for single-molecule drugs, which is a central methodological challenge in the field.

Because of this evidence, Chinese herbal medicine is increasingly practiced as integrative medicine, combined with conventional care rather than replacing it. Centers such as the UCLA Center for East-West Medicine at the David Geffen School of Medicine at UCLA blend TCM with Western diagnosis and treatment, and the World Health Organization (WHO) took a significant step in recognizing the tradition by including TCM diagnostic categories in the ICD-11, the International Statistical Classification of Diseases and Related Health Problems.

Application of Chinese medicine in modern diseases

Chinese pharmacology is actively researched for a range of modern diseases, including mental-health conditions such as depression and anxiety, where certain formulas are studied for their calming and mood-regulating effects. Interest has also grown in TCM as a source of alternatives amid rising antimicrobial resistance, since some herbal compounds show antibacterial activity through mechanisms unlike conventional antibiotics.

Treating Alzheimer's disease with plant compounds

Plant compounds from Chinese herbal medicine are being investigated for Alzheimer's disease, most notably icariin, a flavonoid derived from Epimedium (horny goat weed). Laboratory studies report neuroprotective activities for icariin, including reduction of inflammatory and oxidative damage in nerve cells, which is why it is studied as a candidate for slowing neurodegeneration. These findings remain preclinical, and icariin is not an approved Alzheimer's treatment, but it illustrates how traditional herbs feed modern pharmacological discovery.

Use in COVID-19 and infections

During the COVID-19 pandemic, Chinese herbal formulas were used in China as adjuncts to conventional care, often to ease symptoms and support recovery. Because CHMs act on multiple targets, they were proposed as supportive treatment rather than a cure, and researchers examined their effect on fever, cough and inflammation. As with other applications, robust, well-controlled trials are needed to separate genuine benefit from the effects of concurrent standard care.

Safety and side effects

Chinese herbal medicines are often described as having low toxicity profiles when correctly identified, processed and prescribed, but "natural" does not mean risk-free. The tradition's own grading of drugs into safe tonics and dangerous poisons reflects an ancient awareness of harm, and modern safety concerns center on adverse reactions, contamination, mislabeling and interactions with pharmaceuticals. Anyone combining herbs with prescription medication should consult a qualified practitioner and their physician.

Allergic reactions and herb interactions

Allergic reactions to individual herbs can occur, and Chinese Herbal Medicines can interact with pharmaceuticals — for example altering blood clotting, blood pressure or the metabolism of prescription drugs through shared liver enzymes. Because a single formula may contain many ingredients, identifying the culprit in an adverse reaction can be difficult, which is another reason medical consultation and full disclosure of all remedies are essential before starting herbal treatment.

Toxicity of cinnabar and mineral preparations

Cinnabar, a mineral form of mercuric sulfide, is the clearest example of a toxic traditional ingredient and a focus of modern safety research. Studies have linked cinnabar and mercuric sulfide to cardiotoxicity and other organ damage, and toxicity models — including zebrafish larvae — are now used to quantify these risks. Such findings have driven tighter quality assurance and, in many jurisdictions, restrictions or bans on mercury- and arsenic-containing preparations that were once used freely.

Comparison with Western medicine and other traditional systems

Compared with Western biomedicine, Chinese pharmacology is holistic, individualized and prevention-focused, treating patterns of disharmony across the whole body rather than isolating a single disease mechanism. Western medicine typically manages symptoms with a targeted single-compound drug, whereas TCM aims at the root cause through multi-herb formulas matched to constitution. Critics point out that many TCM concepts — qi, meridians, the Five Elements — have no basis in modern physiology and label parts of the system pseudoscience, while proponents note that specific herbs have yielded validated, pharmacologically active compounds.

Within the broader family of Asian medicine systems, TCM shares a holistic, energy-balance outlook with other cultural medical practices but is distinguished by its enormous documented materia medica and its formal Five Elements and yin-yang framework. Its influence extends across the Sinosphere, and it is widely practiced beyond China: in Australia, for instance, TCM is regulated, with registration overseen by bodies such as the Chinese Medicine Registration Board and professional representation through the Australian Acupuncture and Chinese Medicine Association, reflecting substantial public use of acupuncture and herbal medicine.

Dietary recommendations and lifestyle change

Dietary advice and lifestyle modification are integral to Chinese pharmacology rather than an afterthought, because food itself is classified by nature and flavour in the same way as herbs. Practitioners recommend warming or cooling foods to counterbalance a patient's pattern, encourage regular meals and rest, and prescribe stress management through meditation, tai chi and qigong. This emphasis on prevention through daily habits mirrors the tradition's belief that maintaining balance is preferable to treating disease once it has taken hold.

Current challenges in Chinese pharmacology research

The central challenges in Chinese Herbal Medicines research are demonstrating efficacy with rigorous trials, standardizing raw materials, and explaining the pharmacological mechanisms of action of complex multi-herb formulas. Batch-to-batch variation in plant material, the difficulty of applying single-target trial designs to multi-target remedies, and safety concerns over toxic or contaminated ingredients all complicate the science. Future perspectives lie in identifying active compounds, mapping how they act on multiple targets at once, and building the quality-assurance systems that let traditional remedies meet modern regulatory standards.

The trajectory of Chinese pharmacology — from Fuxi's legend through Shennong's herbal, the world's first state pharmacopoeia, and Li Shizhen's Compendium of Materia Medica to WHO recognition in the ICD-11 — shows a tradition continually reworking inherited knowledge in light of new evidence. You can explore related fields through the broader section and the wider study of Medicine.

Conclusion

Chinese pharmacology is one of the oldest and most richly documented branches of Traditional Chinese Medicine, built on the concepts of qi, yin and yang and the Five Elements and expressed through thousands of plant, animal and mineral remedies. Its strengths — individualized, prevention-focused, multi-target treatment — are matched by real challenges around evidence, standardization and the toxicity of certain ingredients such as cinnabar. Studied today as integrative medicine and recognized by the WHO, Chinese herbal medicine remains most valuable when combined with qualified guidance and conventional care rather than used as a substitute for it.