Medicine from the natural world
For most of antiquity, treatment meant materials taken from the environment: plants, minerals, animal products, wine, honey, oil, vinegar and water. A healer who prescribed a drug was usually drawing on a mixture of inherited recipe, personal experience and written authority. The word pharmacology is modern, but the Greek word pharmakon was already used for a drug or remedy, and also, tellingly, for a poison. The same substance could heal or harm depending on the dose, which ancient writers knew.
This article concerns the substances and the texts, not general medical theory. Nothing here is a recommendation: many ancient ingredients are toxic, and ancient dosing was imprecise.
The earliest written recipes
Written drug lore goes back to the third and second millennia BCE. Mesopotamian cuneiform tablets contain prescriptions that list plants, minerals and animal substances, and the Egyptian medical papyri give recipes for ointments, drinks, fumigations and other preparations. Many of the medical papyri treatments rely on honey, grease, oils and a variety of plants. Mesopotamian prescriptions, used by Mesopotamian healers, also employed beer and oil as vehicles.
A major difficulty is identification. The ancient names are often hard to match to modern species, and the same word might have covered several plants. Translators of these texts therefore tend to offer tentative identifications.
Greek plant knowledge
Greek writers on medicine regularly mention drugs, but the first systematic study of plants as such is credited to Theophrastus, a pupil and successor of Aristotle, in the late fourth and early third centuries BCE. His works on plants discuss their forms, habitats and uses. This was natural history as much as medicine, and the two fields were closely related.
A root-cutter (rhizotomos) and a drug seller (pharmakopoles) were familiar figures. These specialists gathered and sold materials, and their work was not always well regarded by physicians, who sometimes accused them of fraud. A good deal of the actual trade is known only from references in other literature.
Dioscorides and the Roman handbook tradition
The most influential ancient drug handbook was De Materia Medica by Dioscorides, a Greek physician who is thought to have travelled with the Roman legions in the first century CE. It describes hundreds of substances, including plants, minerals and animal products, with their appearance, preparation and uses. It continued to be copied and used for well over a thousand years, and illustrated manuscripts survive.
Pliny the Elder, in the first century CE, compiled a large Natural History that includes a great many remedies drawn from earlier writers, along with folklore. He is less selective than Dioscorides and includes claims that we now regard as fantastic. Celsus, also writing in the first century CE, discusses drugs within a broader medical work.
Galen, in the second century CE, wrote extensively on the properties of simple drugs and on compound preparations. His theoretical framework matters here, since he explained the action of drugs using qualities such as hot, cold, wet and dry, in line with humoral theory. Under this approach, a drug was chosen to counteract an imbalance.
Compound remedies and antidotes
Many ancient remedies combined dozens of ingredients. A famous example is theriac, an antidote for poisons and bites developed in the Hellenistic and Roman period, with later versions containing a long list of substances. Such compounds had prestige and were attributed to rulers and physicians. Their effectiveness as antidotes was doubtful, though some ingredients may have had mild effects.
Fear of poison was a theme in the Hellenistic and Roman world, and the study of toxins and antidotes was linked to royal courts. This is one of the clearest cases where political life shaped the pharmacological tradition.
Some imported aromatics, such as frankincense and myrrh, reached the Mediterranean along the incense trade routes of Arabia, and spices from India later arrived with the monsoon trade winds that Roman merchants learned to use. Such materials were expensive, which limited who could afford them.
Minerals, metals and animal products
Healers also used minerals and earths, such as alum and salts, and metals such as copper compounds, applied mainly to wounds and skin. Some of these have antiseptic or astringent properties, while others, such as lead compounds, are hazardous. Animal products ranged from honey, which does have antibacterial properties in some forms, to substances that were evidently symbolic or based on magical ideas. Ancient texts do not separate the useful from the useless as clearly as we might.
Wine and vinegar were used to clean wounds, and wine was part of many drug preparations. These details often appear in sources about military and household care.
What do we know about effectiveness?
Modern researchers have tested some ancient plants for biologically active compounds, and some do have recognised effects. Poppy preparations, for example, contain opiates, and willow bark has long been associated with pain relief. But identifying a plant that contains an active compound does not mean an ancient remedy was safe or effective in the form and dose used. Many ancient recipes involve parts of plants, mixtures or procedures with no known effect.
The reasonable summary is cautious. Ancient pharmacology rested on real accumulated experience and some genuine effects, mixed with theory, ritual and error. It is best read as history, not as a guide to treatment, and anyone with a health concern today should consult a qualified professional.
Why the texts matter
The handbooks are valuable for botany and for cultural history as well as medicine. They show which plants were traded, how knowledge was classified, and how authors borrowed from one another. They also reveal a long continuity: drug lore moved from Near Eastern tablets to Greek treatises, Roman compilations and, later, medieval herbals and Arabic works.