Ancient Sumerians record hundreds of medicinal plants on clay tablets

Story: 3500 B.C.E.  |  Last updated: January 10, 0001

Somewhere in ancient Mesopotamia, a scribe pressed a stylus into wet clay and recorded something remarkable: a working list of medicinal plants, organized and preserved for others to use. That act — modest in itself — helped launch one of humanity’s oldest ongoing projects: the systematic understanding of how the natural world can heal.

What the evidence shows

• Sumerian medicinal plants: Clay tablets from ancient Mesopotamia record hundreds of plant-based remedies, including myrrh and opium — among the earliest written pharmacological records in human history.
• Written herbalism: The Sumerian tablets mark the transition from oral and experiential plant knowledge to documented, transmissible medical information — a shift that shaped every healing tradition that followed.
• Ancient plant medicine: The Sumerian record is part of a broader pattern: parallel traditions in Egypt, India, and China were building similarly sophisticated herbal systems at roughly the same historical moment.

Before anyone wrote it down

The use of plants as medicine is far older than writing. Hominids other than Homo sapiens — including orangutans — have been observed treating injuries and illness with medicinal plants. Neanderthal burial sites suggest that our closest evolutionary relatives were using plant-based remedies as far back as 60,000 years ago.

Ötzi the Iceman, whose body was preserved in the Alps for more than 5,000 years, carried herbs in his personal effects that appear to have been used to treat intestinal parasites. The knowledge was there long before anyone found a way to write it down.

What the Sumerians did was different. They created a record — a transmissible document that could outlast any single practitioner, teacher, or generation.

A civilization that took knowledge seriously

The Sumerians of ancient Mesopotamia — in what is now southern Iraq — are credited with some of the earliest writing systems in human history. Their clay tablets covered trade, law, astronomy, and literature. That they also catalogued medicinal plants reflects something important: they understood that knowledge, organized and preserved, has compounding value over time.

The tablets listed hundreds of plants. Among them were myrrh, used across the ancient world as an antiseptic and anti-inflammatory, and opium, whose pain-relieving properties would anchor medicine for millennia. These were not speculative entries. They reflected generations of accumulated empirical observation — what worked, what didn’t, and in what quantities.

Mesopotamia’s position between rivers, trade routes, and neighboring cultures also meant that Sumerian herbalists likely had access to plant knowledge from beyond their immediate region. The tablets were as much a record of exchange as of invention.

A world of parallel breakthroughs

The Sumerian effort was not happening in isolation. In ancient Egypt, healers were compiling what would eventually become the Papyrus Ebers — a document listing more than 850 plant medicines, including garlic, cannabis, aloe, and castor bean. In India, early Ayurvedic traditions were building a system that would eventually be codified in texts like the Sushruta Samhita, describing 700 medicinal plants. In China, legendary emperor Shennong was credited with cataloguing 365 medicinal plants, a text that introduced ephedra — and eventually the drug ephedrine — to the world.

These traditions were largely independent. That they converged on similar methods — observation, documentation, categorization — speaks to something universal in how humans process and share practical knowledge.

Lasting impact

The Sumerian tablets helped establish the basic architecture of pharmacology: the idea that specific plants, used in specific ways, could produce predictable outcomes. That architecture never went away.

Many compounds first noted in ancient herbal traditions became the basis for modern pharmaceuticals. Opium gave rise to morphine, codeine, and an entire class of pain management drugs. Compounds from plants in traditional Chinese, Indian, and Mesoamerican medicine have informed treatments for malaria, heart disease, and cancer. The World Health Organization estimates that roughly 80% of the global population still uses plant-based medicine as a primary or supplementary form of health care.

The Sumerians did not know what would follow. They were solving an immediate problem: how do you make sure the next healer knows what this generation learned? Their answer — write it down — turned out to be one of the most consequential decisions in the history of medicine.

The pharmaceutical industry, the modern hospital formulary, and the herbal supplement on a pharmacy shelf all trace a line back to that impulse.

Blindspots and limits

The surviving record is fragmentary. Most of what Sumerian healers knew, believed, or practiced is gone — lost to time, incomplete excavation, or tablets that never survived. The line between medical knowledge and ritual or spiritual practice in ancient Mesopotamia was also not as clean as modern framing suggests; healers were often priests, and treatments combined plant remedies with incantations in ways the tablets may not fully capture.

It is also worth being precise: the tablets recorded plant names and uses, but the scientific mechanisms behind those uses — why myrrh inhibits bacterial growth, or why opium suppresses pain — were entirely unknown. The knowledge was real. The explanatory framework was not yet there. That distinction matters when tracing the long road from ancient herbalism to evidence-based medicine.

What it means to write something down

There is a version of this story that focuses on Sumerian civilization as a singular achievement. But the more accurate — and more moving — story is that humans everywhere, across thousands of years and dozens of unconnected cultures, arrived at the same conclusion: the plants around us can heal, and that knowledge is too important to lose.

The Sumerians gave that conclusion a durable form. They pressed it into clay, fired it, and let it survive. The World Health Organization’s ongoing work on traditional medicine reflects how seriously that inheritance is still taken. So does the Royal Botanic Gardens Kew’s Medicinal Plant Names Services, which today catalogs and preserves plant knowledge from cultures around the world — a digital descendant, in a sense, of what those ancient scribes began.

Every time a researcher screens a plant compound for pharmaceutical potential, they are doing something the Sumerians would have recognized: looking carefully at the natural world and asking what it has to offer. The National Institutes of Health’s research on plant-derived medicines has helped confirm that at least 25% of modern drugs have origins in plant compounds identified through traditional knowledge systems. And the ethno-pharmacology research published in journals like Science continues to draw on Indigenous and traditional plant knowledge as a starting point for drug discovery.

The clay tablets are gone from active use. The knowledge they carried is not.

Read more

For more on this story, see: Wikipedia — History of Herbalism

For more from Good News for Humankind, see:

• A drug cuts Alzheimer’s risk in half in a landmark prevention trial
• The global suicide rate has fallen by 40% since 1995
• The Good News for Humankind archive on ancient history

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