Motherwort: History and Traditional Use

Table of Contents

1. Origins, Botany and a Name That Says What It Does
2. Cordiaca and Herzgespann: The Printed Herbals, 1485–1685
3. Culpeper's Merry Heart: The English Tradition
4. Yi Mu Cao: The Chinese Cousin and Its Own History
5. Crossing the Atlantic: Motherwort and the American Eclectics
6. The Laboratory Chapter: Stachydrine, Leonurine and the Isolation of 1930
7. Pharmacopoeias and Monographs: Commission E (1986) and the EMA (2010)
8. Tradition Meets Modern Evidence
9. Motherwort Today
10. Key Research Papers
11. Connections
12. Featured Videos

Origins, Botany and a Name That Says What It Does

Motherwort, Leonurus cardiaca, is a hardy perennial of the mint family (Lamiaceae): a stiff square stalk up to a metre and a half tall, deeply lobed lower leaves shaped a little like a bird's foot, and small pink-to-purple flowers set in tight rings around the stem, each ring guarded by sharp-pointed green calyces. Everything about it — the bitterness, the spines, the toughness — says weed, and for most of its history that is what it was: a plant of waste ground, fence lines and the edges of gardens.

Its original home is usually given as Central Asia and south-eastern Europe; the German botanical literature places the native range from Europe eastward into Iran, and nineteenth-century American physicians repeated the old idea that it was "supposed to be a native of Tartary," the vague European name for the steppes beyond the Caspian. From there it spread across almost all of Europe and later to North America, carried as a medicinal plant and then escaping. Culpeper, writing in London in the 1650s, still said: "It grows only in gardens with us in England" — in Britain it began as an introduced physic-garden herb, not a native wildflower.

The names are a compressed history. Leonurus is Greek for "lion's tail" (leon, lion; oura, tail), a fanciful description of the shaggy flower spike that also gives the German Löwenschwanz and the English "lion's tail." Cardiaca is from the Greek kardia, heart; long before Linnaeus fixed the binomial in 1753, medieval writers simply called the plant Cardiaca, "the heart herb." The German Herzgespann joins Herz, heart, to an old word for a strained tightness — the same idea sits in the variant Herzspannkraut, "heart-strain herb." And "motherwort" is not about mothers in the modern sense: "wort" is the Old English word for a plant, and "the mother" was, into the eighteenth century, the ordinary English word for the womb ("fits of the mother" meant uterine spasm or hysteria). Motherwort was literally "the womb plant." Culpeper offered both readings: the herb "makes women joyful mothers of children, and settles their wombs as they should be, therefore we call it Motherwort."

One botanical caution runs through the whole story. The genus holds about two dozen species and its taxonomy is, in the European Medicines Agency's words, "still controversial." The plant of Chinese and Japanese medicine is Leonurus japonicus, long mislabelled Leonurus sibiricus in the literature and in commercial seed; the true L. sibiricus is a different Siberian species. Much of what is written about "motherwort chemistry," especially the alkaloid leonurine, was done on the Asian plant, and this article keeps the two apart wherever the sources allow.

Back to Table of Contents

Cordiaca and Herzgespann: The Printed Herbals, 1485–1685

It is often written that the ancient Greeks gave motherwort to anxious pregnant women, or that the Romans used it for the heart. We could not verify either claim: Dioscorides' De Materia Medica and Pliny's Natural History describe hundreds of plants under names that scholars have spent centuries trying to match to living species, and for Leonurus cardiaca there is no entry that botanical historians agree on. A recent full-length review of the plant names no ancient author at all. Motherwort may have been used in the classical Mediterranean world, as a plant native to south-eastern Europe well might have been, but no surviving ancient text can be shown to describe it; nor could we find a primary source for the popular claim that fifteenth-century Europeans used it to ward off evil spirits. The firm record begins with the first printed herbals — and when it does, the plant's reputation as a "heart herb" is already fully formed. German medical historians who have studied the plant's European tradition trace it to the Gart der Gesundheit ("Garden of Health"), printed at Mainz in 1485 and one of the earliest herbals in any vernacular language, where the plant appears as Cordiaca and is recommended for pressure in the stomach and complaints of the heart. That single entry already holds the two threads — digestive and cardiac — that run through the next five hundred years.

The sixteenth-century "fathers of botany" picked it up. Leonhart Fuchs, whose illustrated De historia stirpium of 1542 set the standard for the Renaissance herbal, and the physician-alchemist Paracelsus are both reported to have recommended motherwort steeped in wine for a too-strongly beating heart, for cramps and for palsy of the limbs; it was also held to increase urine and bring on a missed period. Rembert Dodoens' Cruydeboeck of 1554 advised a wine preparation against melancholy and to strengthen the heart. The European Medicines Agency's assessors, assembling the case for centuries of continuous use, cite Pietro Andrea Mattioli's commentary on Dioscorides (a 1626 edition) for "trembling and palpitations of the heart"; Adam Lonicer's herbal (1679 edition) for cardiac pain and irregularities; and Johann Schröder's pharmacopoeia (1685) for heart complaints, especially in children. From Mainz to Antwerp to Frankfurt, across two hundred years, the same plant was given for the same nervous, fluttering heart.

The preparations were simple: the dried herb as a tea; the herb steeped or boiled in wine, the usual vehicle for a bitter herb before tinctures; a sugared conserve or syrup; and warm compresses for external use. None of this is evidence that the herb worked; it is a record of what people did.

Back to Table of Contents

Culpeper's Merry Heart: The English Tradition

The most quoted sentence in motherwort's history belongs to Nicholas Culpeper, the radical London apothecary whose English Physitian of 1652 — enlarged the next year into the book known ever since as The Complete Herbal — put the plant lore of the learned herbals into cheap English for ordinary readers. His entry, checked here against the printed text, reads:

"Venus owns the herb, and it is under Leo. There is no better herb to take melancholy vapours from the heart, to strengthen it, and make a merry, chearful, blithe soul than this herb. It may be kept in a syrup or conserve; therefore the Latins called it Cardiaca. Besides, it makes women joyful mothers of children, and settles their wombs as they should be, therefore we call it Motherwort. It is held to be of much use for the trembling of the heart, and faintings and swoonings; from whence it took the name Cardiaca. The powder thereof, to the quantity of a spoonful, drank in wine, is a wonderful help to women in their sore travail, as also for the suffocating or risings of the mother."

"Venus owns the herb, and it is under Leo" is astrology, not botany: Culpeper gave every plant a ruling planet and sign, matching Venus (the planet of women) to the womb uses and Leo (the sign of the heart) to the cardiac ones — the framework of his medicine, described here as such. "Melancholy vapours" belongs to the humoral theory of the age; "sore travail" is labour; the "risings of the mother" is the lump-in-the-throat sensation then blamed on a wandering womb. What Culpeper gives us is a snapshot of English practice in the mid-1600s: a garden herb, taken as syrup, conserve or powder in wine, for the two complaints in its name. That pairing of the emotional heart and the physical womb is motherwort's signature in every later English-language herbal.

Back to Table of Contents

Yi Mu Cao: The Chinese Cousin and Its Own History

Half a world away, a related plant was building a parallel reputation. Leonurus japonicus — Chinese motherwort, yi mu cao (益母草), literally "benefit-mother herb" — is native to China, Korea and Japan and is one of the important herbs of traditional Chinese medicine. Reviews of the Chinese literature record that its aerial parts have been used "for thousands of years" for irregular and painful menstruation, absent periods, retained lochia (the bleeding and discharge after childbirth), swelling and sores; in the language of Chinese medicine it "invigorates the blood and dispels stasis," a traditional framework rather than a modern mechanism. Pharmacology reviews state that Leonurus was listed in the top grade of the Shennong Bencao Jing, the foundational Chinese materia medica compiled in roughly its present form in the Han dynasty (the dating is itself debated), and was regarded as non-toxic in the later herbals. The plant is listed today in the Pharmacopoeia of the People's Republic of China.

Keeping the two plants distinct matters, because the chemistry differs in a way that shapes the whole modern literature. The alkaloid leonurine occurs in useful amounts in the Chinese species and only in traces — a few thousandths of one per cent, by one analysis — in European L. cardiaca; when a study of "motherwort" reports on leonurine and uterine contraction, it is almost always the Chinese plant that was studied. That uterotonic reputation was even tested clinically: a 1983 Hong Kong study gave a single decoction of yi mu cao to 141 women and measured intra-uterine pressure directly, finding a contraction response in about four in ten — a modern echo of an ancient postpartum use, and a reminder of why neither plant belongs in pregnancy.

Back to Table of Contents

Crossing the Atlantic: Motherwort and the American Eclectics

European settlers carried motherwort to North America as a garden medicine, and it did what it had done in Europe: it climbed over the fence. William Cook, in his Physio-Medical Dispensatory of 1869, wrote that it was "said to be naturalized from Europe, but is now common in all parts of this country, usually growing near dwellings, by the side of fences, in rich soils," and King's American Dispensatory of 1898 called it "an exotic plant, but extensively introduced into this country." It was also planted as bee forage; today it is listed as invasive in parts of the continent.

The Eclectics — a school of American physicians who built their practice on plant medicines — bridge the old herbals and the modern monographs, because they describe the same uses in the clinical language of their day. King's classed the herb as an "emmenagogue, nervine, antispasmodic, and laxative," used in absent menstruation, suppressed lochia, hysteria, chorea and nervous complaints; it also recorded the continental tradition that motherwort was "highly endorsed as a remedy for hydrophobia" (rabies), noted here as history only. Cook called it "a pleasant and moderately strong tonic" acting on the nervous system, and for "nervousness, pains and palpitation of the heart" an agent "deserving of the first consideration," while warning against it "when the menses are too free." As late as 1922 Harvey Wickes Felter still listed it as an emmenagogue and antispasmodic "evidently having considerable control over the nervous system," adding that it "deserves restudy to determine its value in nervous affections" — a sentence that reads, a century on, as a fair summary of where the evidence still stands.

Back to Table of Contents

The Laboratory Chapter: Stachydrine, Leonurine and the Isolation of 1930

Chemistry came to motherwort late. The nineteenth-century analyses that King's reported found only "a bitter principle," "an alkaloidal substance," resins and mineral salts — a science that could detect a class of compound but not yet name one. The naming began in East Asia, with the Chinese plant.

In 1926 three Chinese pharmacologists, F.-T. Chu, S.-M. Chen and K. K. Chen, published "A Preliminary Study of Leonurus sibiricus (I-Mu-Tsao)" — an older romanisation of yi mu cao — one of the first attempts to test a classical Chinese drug with Western laboratory methods. In 1930 the Japanese pharmacologists Seiko Kubota and Seikichi Nakashima published a two-part study of the same plant, and modern reviews date the first isolation of its signature alkaloid, leonurine, to that year. Working out what leonurine was took nearly four decades more: its structure was settled and confirmed by total synthesis in 1968–69 by a Japanese group including Yoshito Kishi and Sumi Sugiura (it proved to be a guanidine ester of syringic acid, a small water-soluble molecule), and a simpler synthesis published in 1979 opened the way to the animal and, eventually, human studies that continue today, mostly in China.

The European plant's chemistry was mapped separately. Its most consistent alkaloid is not leonurine but stachydrine, a betaine of the amino acid proline named for the related genus Stachys (the betonies), present at roughly a third of one per cent and up to about one per cent in some analyses. The bitterness every herbalist had noticed was traced, from the 1970s, to labdane-type diterpenes such as leocardin and leosibiricin. Flavonoids, iridoid glycosides, phenolic acids and, from Polish plants, a glycoside named lavandulifolioside filled out the picture; the 2002 study that isolated lavandulifolioside showed that this one constituent lowered heart rate and blood pressure and prolonged sedation in animals, a first concrete candidate for the "heart-calming" action the herbals described. In 2009–10 a German-Italian team put standardised extracts of pharmacopoeial L. cardiaca through modern cardiac electrophysiology and found that a refined extract slowed the heart and lengthened the electrical refractory period in isolated hearts — the kind of effect that, in a drug, would be called mildly antiarrhythmic. After five hundred years of use, the plant's "active ingredient" remains plural and partly unknown.

Back to Table of Contents

Pharmacopoeias and Monographs: Commission E (1986) and the EMA (2010)

Motherwort never left the official European pharmacy shelf. The German pharmacopoeial supplement described the herb more than fifty years ago; the British Herbal Pharmacopoeia of 1974 listed it as a sedative and antispasmodic for "cardiac symptoms associated with neurosis"; the Russian Pharmacopoeia carried it, and motherwort tinctures were sold across the Soviet Union and the Baltic states from the 1950s for "cardiovascular neurosis" and early hypertension — claimed, by one Soviet reference, to be two or three times stronger than valerian. The herb has since been admitted to the European Pharmacopoeia itself.

Two monographs turned that usage into regulatory language. Germany's Commission E, the expert panel that reviewed herbal drugs for the federal health authority, approved motherwort herb in 1986 for nervous cardiac disorders and as an adjuvant in hyperactivity of the thyroid — a supporting remedy for the racing heart of an overactive thyroid, alongside proper treatment of the gland. The phytotherapist Rudolf Fritz Weiss had recommended it for that "tachycardia associated with hyperthyreosis" since the 1970s, while noting bluntly that motherwort "has no thyreostatic activity": it does not touch the thyroid, only the symptom.

On 20 December 2010 the European Medicines Agency's Committee on Herbal Medicinal Products (HMPC) adopted a Community herbal monograph on Leonurus cardiaca L., herba, on the basis of a thirty-five-page assessment report surveying every published use from Mattioli onward. It places motherwort in the category of traditional use — a status granted on at least thirty years of documented use (fifteen in the EU) and acceptable safety, explicitly not on clinical proof of effectiveness. Its indications are the relief of symptoms of nervous tension, and of nervous cardiac complaints such as palpitations after a doctor has excluded serious disease; it is for adults only; it must not be taken in pregnancy. The assessors declined to carry over Commission E's thyroid indication, finding it "not supported by any clinical data." The monograph was revised once (2018) and is under periodic review again in 2026. Read together, the two monographs are the end-point of the story that began with Cordiaca in 1485: the nervous, palpitating heart is still the indication; the womb has quietly dropped out of the official text; and pregnancy, once a reason to give the herb, has become the reason not to.

Back to Table of Contents

Tradition Meets Modern Evidence

What does modern research make of five centuries of "heart herb"? Plausible, under-tested. Laboratory and animal studies support the general direction of the tradition — extracts and isolated constituents slow the heart, lower blood pressure modestly, prolong sedation and blunt some of the electrical activity behind a too-fast rhythm — and behavioural tests in animals find mild anti-anxiety effects. None of this is proof in humans.

The human evidence rests largely on one study. In 2011 Alexander Shikov and colleagues in St Petersburg reported on fifty patients with stage 1 or 2 high blood pressure who also had anxiety and sleep problems, treated for 28 days with 1,200 mg a day of a motherwort extract made in oil. Blood pressure fell by roughly 12–15 mmHg systolic and 10 mmHg diastolic from baseline, and scores for anxiety, emotional lability and sleep improved. It is the study every review cites — but it had no placebo or control group and lasted four weeks, and the European assessors' verdict is the right one: "no conclusion on efficacy can be drawn from this study. However, the results add to the plausibility of the traditional use." There is, as of this writing, no adequately controlled trial showing that motherwort treats palpitations, an arrhythmia, hypertension or an anxiety disorder in people. Its European legal status — traditional use, not well-established use — is an accurate description of the evidence, not a technicality.

The pregnancy caution, by contrast, has only strengthened. The tradition said the herb stirred the womb; the Hong Kong measurement of uterine pressure confirmed that the Chinese species can do exactly that; and every modern monograph contraindicates motherwort in pregnancy. Here tradition and science point the same way, and the old use as a birthing aid is precisely why the herb is now kept away from expectant mothers.

Back to Table of Contents

Motherwort Today

Walk a neglected allotment in Europe or the north-eastern United States in July and you may find motherwort in flower, prickly and unloved, exactly where Cook found it in 1869 — "by the side of fences." It remains a working herb rather than a fashionable one: a registered traditional herbal medicine in Germany and the Baltic states, sold as tea and tincture for nervous tension and the nervous heart, and a staple of the British and American herbalist's dispensary, given as a tincture (few people drink the tea twice) for stress-related palpitations, menopausal turbulence and premenstrual tension — the same two territories, heart and womb, that its names have always marked out. Its Chinese cousin is prescribed on a far larger scale for postpartum and menstrual complaints, and leonurine has lately entered early-phase human trials in China. Felter's verdict of 1922 — that motherwort "deserves restudy" — is still the best summary of its scientific standing, and Culpeper's of 1653 is still the best summary of why people keep growing it: a herb "to take melancholy vapours from the heart."

Back to Table of Contents

Key Research Papers

The list gathers the principal modern reviews of motherwort's chemistry, pharmacology and traditional use, the landmarks of its laboratory chemistry (the 1926 and 1930 studies of the Chinese plant and the 1969 structure of leonurine), and the human and experimental studies discussed above. Historical primary texts are named in the article as sources rather than cited here.

1. Wojtyniak K, Szymański M, Matławska I (2013). Leonurus cardiaca L. (motherwort): a review of its phytochemistry and pharmacology. Phytotherapy Research. — doi:10.1002/ptr.4850
2. Fierascu RC, Fierascu I, Ortan A, Fierascu IC, Anuta V, Velescu BS, Pituru SM, Dinu-Pirvu CE (2019). Leonurus cardiaca L. as a source of bioactive compounds: an update of the European Medicines Agency assessment report (2010). BioMed Research International. — doi:10.1155/2019/4303215
3. Shang X, Pan H, Wang X, He H, Li M (2014). Leonurus japonicus Houtt.: ethnopharmacology, phytochemistry and pharmacology of an important traditional Chinese medicine. Journal of Ethnopharmacology. — doi:10.1016/j.jep.2013.12.052
4. Chu F-T, Chen S-M, Chen KK (1926). A preliminary study of Leonurus sibiricus (I-Mu-Tsao). Experimental Biology and Medicine. — doi:10.3181/00379727-24-3206
5. Kubota S, Nakashima S (1930). The study of Leonurus sibiricus, L. Nippon Yakubutsugaku Zasshi (Folia Pharmacologica Japonica). — doi:10.1254/fpj1925.11.153
6. Sugiura S, Inoue S, Hayashi Y, Kishi Y, Goto T (1969). Structure and synthesis of leonurine. Tetrahedron. — doi:10.1016/0040-4020(69)80036-0
7. Liu S, Sun C, Tang H, Peng C, Peng F (2024). Leonurine: a comprehensive review of pharmacokinetics, pharmacodynamics, and toxicology. Frontiers in Pharmacology. — doi:10.3389/fphar.2024.1428406
8. Miłkowska-Leyck K, Filipek B, Strzelecka H (2002). Pharmacological effects of lavandulifolioside from Leonurus cardiaca. Journal of Ethnopharmacology. — PubMed PMID: 11891090
9. Ritter M, Melichar K, Strahler S, Kuchta K, Schulte J, Sartiani L, Cerbai E, Mugelli A, Mohr FW, Rauwald HW, Dhein S (2010). Cardiac and electrophysiological effects of primary and refined extracts from Leonurus cardiaca L. (Ph.Eur.). Planta Medica. — PubMed PMID: 19918711
10. Shikov AN, Pozharitskaya ON, Makarov VG, Demchenko DV, Shikh EV (2011). Effect of Leonurus cardiaca oil extract in patients with arterial hypertension accompanied by anxiety and sleep disorders. Phytotherapy Research. — PubMed PMID: 20839214

PubMed Topic Searches

1. PubMed: Motherwort ethnobotany and traditional use
2. PubMed: Motherwort history of pharmacology
3. PubMed: Leonurus japonicus (yi mu cao) in traditional Chinese medicine

External Authoritative Resources

• European Medicines Agency — Leonuri cardiacae herba (motherwort): Community herbal monograph, adopted 20 December 2010
• EMA/HMPC — Assessment report on Leonurus cardiaca L., herba (PDF)
• NCCIH — Herbs at a Glance
• PubMed — All research on Leonurus cardiaca

Back to Table of Contents

Connections

• All Herbs
• Motherwort Hub
• Motherwort Benefits
• Palpitations and Heart Uses
• Menstrual and Postpartum Tradition
• Hawthorn
• Lemon Balm
• Valerian
• Wood Betony
• Dong Quai
• Arrhythmia
• Hypertension
• Anxiety
• Hyperthyroidism

Back to Table of Contents

Featured Videos