Wormwood: History and Traditional Use
Few herbs carry as much history in a single leaf as wormwood, Artemisia absinthium. It is the bitterness the Bible reaches for when it wants to describe grief; the drink Pliny says a Roman chariot victor was handed instead of a trophy; the "worm" remedy of a thousand years of European medicine; the plant behind vermouth; and the green spirit that Belle Époque Paris adored, then blamed for madness and banned for most of the twentieth century. This article follows that documented story from the ancient Mediterranean to the modern laboratory, where chemists measured what was really in the old absinthe bottles and pharmacologists worked out what thujone actually does. Where the record is firm we say so; where a claim rests on tradition or legend, we name it as such.
Table of Contents
- Origins, Botany and a Name Worth Explaining
- Egypt, Greece and Rome: The Earliest Records
- A Byword for Bitterness: Wormwood in Scripture and Speech
- Worms, Moths and Bitter Tonics: The Middle Ages to the Herbalists
- From Wormwood Wine to Vermouth and Absinthe
- The Green Hour and the Absinthism Panic
- The Thujone Chapter: Measuring the Myth
- Pharmacopoeias, Commission E and the First Clinical Trials
- Wormwood Today
- Key Research Papers
- Connections
- Featured Videos
Origins, Botany and a Name Worth Explaining
Wormwood is a hardy, silver-leaved perennial of the daisy family (Asteraceae), native to North Africa and the temperate regions of Eurasia and now naturalised across much of the northern United States and Canada, where it escaped from herb gardens long ago. It belongs to the genus Artemisia, a large clan that also includes mugwort, tarragon and the sagebrushes. Every part of the plant is intensely aromatic and intensely bitter, and that bitterness is the thread that runs through its whole history.
The genus name carries two traditions, and both are recorded. Linnaeus formally erected Artemisia in 1753, drawing on a name the Greeks already used. It honours Artemis, the goddess associated with childbirth and the protection of women — a fitting patron, since wormwood's cousin mugwort was a classic remedy for gynaecological complaints. A more specific tradition credits Artemisia II of Caria, the fourth-century-BCE queen, naval commander and student of medicinal plants who died around 350 BCE and who was herself named for the goddess. The species name absinthium is simply the Latin form of apsinthion, the Greek word for the plant. The English "wormwood" is an alteration of Old English wermod, a word of obscure origin; the familiar folk explanation — that it is "worm-wood" because it expels worms — is a later reinterpretation that happens to match one of the herb's oldest uses. The German cognate Wermut gave French and English the word vermouth.
One point of confusion must be cleared up at the start. This page is about common wormwood, Artemisia absinthium, the bitter herb of absinthe and the digestive-bitters tradition. It is a different plant from sweet wormwood, Artemisia annua (qinghao in Chinese medicine), the source of the antimalarial artemisinin, which has its own page on this site. Common wormwood contains no meaningful artemisinin, and nothing in the history below should be read across to the malaria herb.
Egypt, Greece and Rome: The Earliest Records
The oldest claim for wormwood is Egyptian. The European Medicines Agency's assessment of the herb reports that the Egyptians used A. absinthium "or a closely related species" as an antiseptic, a tonic and a remedy for fevers and menstrual pains, citing the Ebers Papyrus, the great medical scroll conventionally dated to about 1550 BCE. That careful hedge matters: the papyrus names plants in a language whose botanical vocabulary is still being deciphered, and the identification of a specific Artemisia is a scholarly inference rather than a certainty. The honest statement is that a bitter wormwood-like plant was probably in Egyptian medicine more than three thousand years ago.
The Greek record is firmer. Hippocrates, or the physicians writing under his name in the fifth and fourth centuries BCE, recommended wormwood for jaundice, and Greek recipes for steeping herbs in white wine — wormwood prominent among them, for stomach complaints and intestinal worms — go back to roughly 400 BCE. Dioscorides, the first-century army physician whose De Materia Medica stayed in use for fifteen hundred years, described the plant fully and, like Galen after him, singled out its use for the stomach and gut. The Roman poet Lucretius, writing before 50 BCE, used wormwood for a famous image: doctors, he said, smear the rim of the cup with honey so that a child will swallow the bitter wormwood medicine inside.
The richest Roman source is Pliny the Elder, whose Natural History (completed about 77 CE) gives wormwood a chapter of its own in Book 27, listing several kinds — the Pontic from the Black Sea coast, the Santonic from Gaul, the more bitter Italian — and dozens of remedies. He calls it among the easiest and most useful of all herbs, says it "strengthens the stomach", explains that its flavour is transferred into wines, and records a detail that has delighted readers ever since: at the Latin Festival, when four-horse chariots raced on the Capitol, the victor was given wormwood to drink, "because, I believe, our ancestors thought health an honourable prize". Wormwood wine (absinthites) would remain a fixture of European cellars for the next eighteen centuries.
A Byword for Bitterness: Wormwood in Scripture and Speech
Long before it was a drink, wormwood was a metaphor. The Hebrew word la'anah, generally translated "wormwood", appears nine times in the Hebrew Bible — seven times as a figure for bitterness, injustice or the bitter end of wrongdoing, and twice as a proper noun. The most famous passage is in the New Testament. In Revelation 8:10–11, at the third trumpet, "a great star fell from heaven, blazing like a torch"; "the name of the star is Wormwood. A third of the waters became wormwood, and many died from the water, because it was made bitter." Whether the biblical writers meant Artemisia absinthium itself or one of its Near Eastern relatives cannot be settled from the texts, but the meaning is not in doubt: wormwood was the bitterest thing the ancient world could name.
That sense passed straight into English. Shakespeare's Nurse in Romeo and Juliet (Act 1, Scene 3) remembers weaning Juliet by putting wormwood on her breast — a real folk practice, and evidence that the herb sat in every early modern household. "Gall and wormwood" is still the idiom for something unbearably bitter to accept. The plant's reputation, in other words, was fixed in language centuries before anyone asked what made it bitter.
Worms, Moths and Bitter Tonics: The Middle Ages to the Herbalists
Through the Middle Ages wormwood was, above all, the worm herb. Medieval physicians used it to drive out tapeworm and other intestinal parasites "while leaving the human host uninjured", as the EMA's historical summary puts it, and it appears in monastic and household medicine across Europe. Hildegard of Bingen in the twelfth century wrote of it for complaints of the stomach and gut; Paracelsus in the sixteenth regarded it as a stomachic (a remedy that settles and stimulates the stomach), a worm remedy and a guard against sea-sickness. All of this is tradition, recorded here as what people did and believed rather than as proof that it worked — though the bitter-tonic use, at least, would later receive modern regulatory recognition.
The herb had a parallel life outside medicine. Its strong scent made it a standard moth and insect repellent, laid among furs and woollens and strewn on floors. Thomas Tusser's rhyming farming manual of 1577 gives the instruction in verse: "While Wormwood hath seed get a handful or twaine / To save against March, to make flea to refraine." Brewers used it as a bittering agent in place of hops — a practice still found in England in the eighteenth century. Nicholas Culpeper, in his mid-seventeenth-century English herbal, gave wormwood one of his longest and most opinionated entries, ranking common wormwood the strongest of the three wormwoods then in use, sea wormwood second in bitterness, and Roman wormwood the mildest and most aromatic.
In the humoral framework of the time, wormwood was "hot and dry", which is how physicians explained its power to warm a cold stomach, dry up excess moisture and kill worms. Those categories belong to the medicine of their day, not to ours, but they explain why wormwood was prescribed so consistently for the same short list of problems — poor appetite, sluggish digestion, jaundice and worms — for two thousand years.
From Wormwood Wine to Vermouth and Absinthe
The ancient habit of steeping wormwood in wine never died. In German-speaking lands the drink was simply Wermutwein, wormwood wine, and when a merchant in Turin introduced a sweet, spiced, wormwood-flavoured fortified wine in 1786 it took the French pronunciation of that German word: vermouth. It quickly became fashionable at the Turin court and, a century later, the backbone of the cocktail. Wormwood is still what gives a good vermouth its faintly bitter finish, although the twentieth-century bans described below sharply reduced how much of the herb went into it.
Absinthe was a different animal: not a wine but a high-proof distilled spirit flavoured with wormwood, green anise and fennel. Its origin is genuinely uncertain and the sources disagree. The popular legend credits a French doctor, Pierre Ordinaire, living in Couvet in the Swiss Jura around 1792, with devising it as an all-purpose tonic. The better-documented tradition has the recipe already in the hands of the Henriod sisters of the same village. What is settled is the commercial history: a Major Dubied acquired the formula in 1797 and opened the first absinthe distillery in Couvet, and in 1805 the family built a second distillery across the French border at Pontarlier under the name Maison Pernod Fils — the historical firm whose name would become shorthand for the drink itself during the century that followed.
Absinthe's leap from Jura curiosity to national habit came through the army. During the French conquest of Algeria in the 1840s, wormwood-based spirits including absinthe were issued to troops as a fever and malaria preventive and to make doubtful water more palatable; the soldiers brought the taste home. It is worth stressing that this was A. absinthium, the bitter herb, and that whatever comfort it gave against fever, it was not the antimalarial A. annua.
The Green Hour and the Absinthism Panic
By the 1860s absinthe was so popular in the bars and cafés of France that five o'clock was called l'heure verte, the green hour. Cheap versions undercut wine after the phylloxera blight devastated French vineyards in the 1870s and 1880s, and consumption soared: by 1910 the French were drinking about 36 million litres a year. Painters and poets made the "green fairy" an emblem of bohemian Paris — and a target.
The medical case against it was built largely by the psychiatrist Valentin Magnan, who over roughly a decade of experiments dosed animals with wormwood oil, produced convulsions, and concluded that absinthe drinkers suffered a distinct disease — "absinthism" — of hallucinations, seizures and mental decline worse than ordinary alcoholism. The idea fitted the temperance politics of the age and the wine industry's commercial interest, and it needed only a scandal. In 1905 a Swiss farm labourer, Jean Lanfray, shot his pregnant wife and two daughters after a day of heavy drinking; he had drunk two glasses of absinthe along with a great deal of wine and brandy, but it was the absinthe that the press and a petition of tens of thousands blamed. Belgium and Brazil banned the drink in 1906, the Netherlands in 1909, Switzerland by referendum in 1910, the United States in 1912, and France — its home market — by decree in 1914, confirmed in law in 1915. In most of Europe and North America, absinthe simply disappeared for the better part of a century.
The Thujone Chapter: Measuring the Myth
The villain of the absinthism story was thujone, the monoterpene ketone in wormwood essential oil (a small, volatile molecule of the kind that gives many herbs their scent). For most of the twentieth century the accepted story was that historical absinthe was loaded with it, that thujone was a cannabis-like hallucinogen, and that it explained everything from van Gogh's ear to Lanfray's rifle. Between the late 1980s and 2010 that story was taken apart piece by piece.
A 1989 Scientific American article by Wilfred Arnold reopened the question historically. In 2000 Karin Höld and colleagues at Berkeley showed what alpha-thujone actually does: it is a competitive antagonist at the GABA-A receptor, the nervous system's main inhibitory "brake", which is why high doses cause tremor and convulsions — and they showed that the liver clears it rapidly. It is a real convulsant, not a hallucinogen. Then the German food chemist Dirk Lachenmeier and co-workers did what no one had done before: they analysed the drink itself. A 2006 review and a landmark 2008 study of thirteen sealed bottles of genuine pre-ban absinthe found thujone concentrations between 0.5 and 48.3 milligrams per litre, averaging about 25 mg/L — far below the hundreds of milligrams the panic had assumed, and within the range permitted today. A 2006 analysis by Padosch, Lachenmeier and Kröner concluded that "absinthism" as a distinct thujone syndrome was essentially fictitious: the harm was chronic abuse of a spirit that was often 60–75 per cent alcohol, sometimes adulterated with toxic colourants.
The regulatory thaw followed the science. A 1988 European directive set maximum thujone levels — 10 mg/kg in spirits over 25 per cent alcohol and 35 mg/kg in drinks labelled as bitters — within which absinthe could legally be sold, and modern EU rules keep a 35 mg/kg ceiling for drinks made with Artemisia. Switzerland repealed its constitutional ban in 2000 and re-legalised absinthe on 1 March 2005. In 2007 the United States Alcohol and Tobacco Tax and Trade Bureau clarified that absinthe could be sold provided it was "thujone-free", defined as under 10 parts per million, and the first legal American absinthes appeared that year.
The myth-busting has an important flip side, and the medical literature recorded it in the same years. In 1997 the New England Journal of Medicine reported a 31-year-old man who drank about 10 millilitres of pure wormwood essential oil, bought online in the belief that it was absinthe, and developed seizures and acute kidney failure. Diluted historical absinthe was not a thujone catastrophe; the concentrated oil is genuinely dangerous. Both findings are modern, and both are true.
Pharmacopoeias, Commission E and the First Clinical Trials
While absinthe was being banned, the herb itself never left the pharmacy. Wormwood tincture was official in the German Pharmacopoeia of 1872 and in later German and East German pharmacopoeias, and the dried herb (Absinthii herba) has its own monograph in the European Pharmacopoeia today. In the 1980s Germany's Commission E — the expert panel that reviewed the evidence for traditional herbal medicines on behalf of the German health authority — approved wormwood for loss of appetite, dyspeptic complaints such as mild gastrointestinal spasm, fullness and flatulence, and spasmodic functional disorders of the biliary tract (what older texts called biliary dyskinesia), taken as a tea before meals for appetite and after meals for the rest. That is the first modern regulatory endorsement of the two-thousand-year-old bitter-tonic use, and it rests on the herb's long-standing use plus physiological studies showing that bitter wormwood preparations stimulate gastric and biliary secretion.
The European Medicines Agency's Committee on Herbal Medicinal Products followed with a European Union herbal monograph, first adopted in July 2009 and revised in 2017 and again in September 2024. It classifies wormwood as a "traditional herbal medicinal product" — a legal category for remedies supported by long use rather than by clinical trials — for temporary loss of appetite and for mild dyspeptic or gastrointestinal disorders, at 2–3 grams of herb a day as tea, with medical advice if symptoms last beyond two weeks, and not for children, in pregnancy, or in people with bile-duct obstruction, cholangitis or liver disease. Because of thujone, the EMA's accompanying assessment recommends that the thujone content of a preparation be specified and regards daily exposures in the range of roughly 3–7 milligrams as raising no special concern, with anything higher needing a case-by-case benefit–risk judgement.
Proper clinical trials came late and small. In 2007 Omer and colleagues published a randomised, double-blind, placebo-controlled study in which 40 patients with Crohn's disease on tapering steroids took a wormwood preparation (3 × 500 mg a day) or placebo for ten weeks: 65 per cent of the wormwood group were almost free of symptoms at week ten without restarting steroids, against none on placebo, and mood scores improved. In 2010 Krebs and colleagues reported a second controlled trial in 20 Crohn's patients taking 3 × 750 mg a day, in which wormwood lowered the inflammatory messenger TNF-alpha and 80 per cent improved at six weeks versus 20 per cent on placebo. The same group ran a small uncontrolled pilot in IgA nephropathy, a kidney disease, the same year. These are encouraging, genuinely modern studies, but they are tiny, come from one research group, and have not been independently replicated — they are a lead, not a settled treatment.
Wormwood Today
Wormwood has ended up almost exactly where it began: a bitter herb for the stomach, taken briefly and in small amounts, and a flavouring for wine and spirits. The herbal monographs in Germany and the EU sanction the tea and tincture for poor appetite and indigestion for a couple of weeks at a time; absinthe and vermouth are legal again, made under thujone limits that the old bottles, it turns out, mostly met anyway; and the essential oil, the one form that has actually poisoned people in the modern medical record, is treated as the hazard it is. The long "worm" tradition survives mainly in folk anti-parasite formulas and has not been tested in modern human trials.
The history leaves two lessons that are worth keeping side by side. The absinthe panic shows how a real but modest hazard can be inflated by politics, commercial rivalry and one terrible crime into a century-long prohibition. The case reports of oil poisoning show that the correction of a myth is not a licence for carelessness. Wormwood was never the green fairy of the posters, and it was never harmless either. It is what Pliny said it was: a useful herb whose power lies in its bitterness, best respected in small doses — health, not intoxication, as the prize.
Key Research Papers
The list covers the modern reviews of wormwood's history and pharmacology, the papers that dismantled the absinthism myth and measured thujone in historical absinthe, the pharmacology of thujone, the one well-documented poisoning by the essential oil, and the first controlled clinical trials. Historical primary texts (the Ebers Papyrus, Dioscorides, Pliny, Tusser, Culpeper) are named in the article, not cited here.
- Szopa A, Pajor J, Klin P, Rzepiela A, Elansary HO, et al. (2020). Artemisia absinthium L.—Importance in the History of Medicine, the Latest Advances in Phytochemistry and Therapeutical, Cosmetological and Culinary Uses. Plants (Basel, Switzerland). — doi:10.3390/plants9091063
- Arnold WN (1989). Absinthe. Scientific American. — PubMed PMID: 2658044
- Höld KM, Sirisoma NS, Ikeda T, Narahashi T, et al. (2000). Alpha-thujone (the active component of absinthe): gamma-aminobutyric acid type A receptor modulation and metabolic detoxification. Proceedings of the National Academy of Sciences of the United States of America. — PubMed PMID: 10725394
- Lachenmeier DW, Walch SG, Padosch SA, Kröner LU (2006). Absinthe—a review. Critical Reviews in Food Science and Nutrition. — doi:10.1080/10408690590957322
- Padosch SA, Lachenmeier DW, Kröner LU (2006). Absinthism: a fictitious 19th century syndrome with present impact. Substance Abuse Treatment, Prevention, and Policy. — doi:10.1186/1747-597X-1-14
- Lachenmeier DW, Nathan-Maister D, Breaux TA, Sohnius EM, Schoeberl K, et al. (2008). Chemical composition of vintage preban absinthe with special reference to thujone, fenchone, pinocamphone, methanol, copper, and antimony concentrations. Journal of Agricultural and Food Chemistry. — doi:10.1021/jf703568f
- Weisbord SD, Soule JB, Kimmel PL (1997). Poison on line—acute renal failure caused by oil of wormwood purchased through the Internet. The New England Journal of Medicine. — PubMed PMID: 9297113
- Omer B, Krebs S, Omer H, Noor TO (2007). Steroid-sparing effect of wormwood (Artemisia absinthium) in Crohn's disease: a double-blind placebo-controlled study. Phytomedicine. — PubMed PMID: 17240130
- Krebs S, Omer TN, Omer B (2010). Wormwood (Artemisia absinthium) suppresses tumour necrosis factor alpha and accelerates healing in patients with Crohn's disease — A controlled clinical trial. Phytomedicine. — doi:10.1016/j.phymed.2009.10.013
- Pelkonen O, Abass K, Wiesner J (2013). Thujone and thujone-containing herbal medicinal and botanical products: toxicological assessment. Regulatory Toxicology and Pharmacology. — doi:10.1016/j.yrtph.2012.11.002
PubMed Topic Searches
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