Golden ragwort

Other Names

butterweedCacalia aureaCineraria balsamitacocash weedcocashweedcough weedebbens rootfalse valerianfemale regulatorgolden groundselgolden Seneciogrundy swallowheart-leaved groundselheart-leaved ragwortheartleaf ragwortJacobaea aurealife rootliferootPackera aureapiunkumragweedsenecioSenecio aureusSenecio aureus f. ecoronatusSenecio aureus var. aquiloniusSenecio aureus var. asheiSenecio aureus var. aurantiacusSenecio aureus var. aureusSenecio aureus var. fastigiatusSenecio aureus var. foliosusSenecio aureus var. gracilisSenecio aureus var. intercedensSenecio aureus var. intercursusSenecio aureus var. semicordatusSenecio ceratophyllusSenecio fastigiatusSenecio gracilisSenecio obtusatussnakerootsquaw weedSt. James wortstaggerwortswamp squawweedTephroseris aureauncumuncum rootunkumwaw weedwaxweedwild valerian

Synopsis

Golden Ragwort (Packera aurea): A Comprehensive Reference

1. Identity and Botanical Classification

Scientific Nomenclature and Synonymy

Packera aurea (formerly Senecio aureus), commonly known as golden ragwort or simply ragwort, is a perennial flower in the family Asteraceae. In older reference works, golden ragwort was classified as Senecio aureus, the name assigned by Linnaeus in 1753. The genus Packera is now considered a segregate of Senecio, and the name Packera is an honorary for Canadian plant systematist and contributor to Flora of North America, John Packer. The species epithet aurea is Latin for "golden."

Common Names

It is also known as golden groundsel, squaw weed, life root, golden Senecio, uncum, uncum root, waw weed, false valerian, cough weed, female regulator, cocash weed, ragweed, staggerwort, and St. James wort. Senecio aureus was known as "Life Root" by the Eclectic Herbalists because of its use as a tonic for the uterus; it was also one of the ingredients in Lydia Pinkham's herbal women's tonic, which was very popular from the late 1800s into modern times.

Natural Source and Geographic Distribution

It is native to eastern North America, from Labrador to Minnesota and from North Carolina to Arkansas, with additional populations in the panhandle of Florida. Habitats include wet to mesic deciduous woodlands, damp woodland openings, woodland borders, moist sandy savannas, sandy swamps, seeps and edges of springs, banks of rivers and lakes, slopes of rocky ravines, glades, moist meadows, roadside embankments, and abandoned fields.

Morphological Description

Golden ragwort is a native herbaceous perennial wildflower in the Asteraceae (daisy) family. The basal foliage forms a dense rosette of semi-evergreen, heart-shaped, serrated green leaves with a purple underside. The central, flowering stalk is mostly bare, with two or three alternate leaves that are much thinner than the basal ones, elongated and deeply lobed. Flowers are daisy-like, up to one inch across, with yellow disks and rays, developing atop terminally-branched, two-foot-tall slender stalks. The plant forms colonies by spreading slowly via rhizomes and will re-seed into favorable sites where the wind carries the seed.

Common Preparations and Dosage Forms

The herb and roots are medicinal, and come to market together. Historically, the plant has been administered in several forms. In 19th-century Eclectic medical practice, the primary preparations described by William Cook in his 1869 Physiomedical Dispensatory included decoctions of the dried herb and root. Used as a warm infusion, it was said to expedite parturition. In homeopathic practice, a tincture of the fresh plant in flower was the standard preparation. In contemporary herbal commerce, when products are sold at all, they appear as fluid extracts, tinctures, or dried root/herb capsules, though golden ragwort products that contain pyrrolizidine alkaloids (PAs) are considered likely unsafe when taken by mouth, as PAs can damage the liver and lungs and possibly cause cancer; only products certified as free of PAs are considered appropriate for use.

2. Traditional and Historical Use

Indigenous North American Traditions

Root and leaf tea was used by Amerindians to treat delayed and irregular menses, childbirth complications, lung ailments, dysentery, and difficult urination (Foster & Duke). Specific tribal uses are well documented across several nations:

The plant was used by Native Americans as a gynecological aid. The Catawbas made a tea out of all parts of the plant to relieve the pain of childbirth, and the Cherokee created an infusion taken to prevent pregnancy.
The Cherokees also used golden ragwort tea for heart trouble. Other Native Americans and early settlers used it to regulate menses, to aid childbirth, treat urinary problems, and treat lung diseases such as tuberculosis.
It was used as a medicinal beverage by the Pottawatomie and Ojibwa peoples; the Pottawatomie also used it as a dye.
Native Americans and pre-industrial European settlers used golden ragwort for medicine, especially the Cherokee and Iroquois.

19th-Century Eclectic and Physiomedical Medicine

The plant was an important treatment among the Native Americans and among the Eclectic medicine physicians for reproductive conditions. The Eclectic school—a 19th-century American medical movement that drew heavily on botanical remedies—adopted golden ragwort as one of its characteristic agents.

The European species Senecio vulgaris, under the name of groundsel, had been a very popular remedy in England for several centuries, and the American species was used by the English colonists of New England from the earliest settlements.

The Eclectic physician John M. Scudder described the plant's primary sphere of action in his 1870 work Specific Medications and Specific Medicines. Scudder wrote that Senecio exerts a specific influence upon the reproductive organs of the female, and to a lesser extent upon the male; that it relieves irritation and strengthens functional activity, acquiring the reputation of a "uterine tonic"; that it may be prescribed in all cases of atonic condition of ovaries or uterus with derangement of function, whether amenorrhoea, dysmenorrhoea, or menorrhagia; and that the remedy acts slowly, requiring sufficient time. He further noted its use in male conditions including urinary difficulties.

William Cook's 1869 Physiomedical Dispensatory provided a detailed pharmacological characterization: while it was said to promote menstruation in languid and partially atonic amenorrhea, it did so by virtue of its tonic action, and was described as aiding passive menorrhagia by giving tone to the uterus, with a warm infusion said to expedite parturition. The kidneys were said to feel its influence, especially when involved with female difficulties; the lungs were reportedly strengthened by its use; and some physicians valued it in sub-acute and chronic dysentery.

An early 19th-century clinical account published in the New York Journal of Medicine, preserved in a PMC-archived source, described it as: given in infusion it was said to promote perspiration and the secretion of urine, increase the force of the circulation without producing febrile tendency, and was considered particularly useful in anemia with cold extremities and feeble circulation; in dysmenorrhea, a cupful of the warm infusion was reported to frequently give entire relief.

Homoeopathic Tradition

Golden ragwort had a reputation in domestic and Eclectic practice as a regulator of menstrual functions when Hale introduced it into homoeopathic practice; A. E. Small and others proved it, and clinical additions filled out the picture. In the homoeopathic Materia Medica of John Henry Clarke, the clinical indications catalogued for Senecio aureus included amenorrhoea, ascites, cough, dropsy, dysmenorrhoea, dysuria, epistaxis, haemorrhages, menorrhagia, and menstrual irregularities.

Commercial Use in Proprietary Preparations

Senecio aureus was known as "Life Root" by the Eclectic Herbalists because of its use as a tonic for the uterus, and it was one of the ingredients in Lydia Pinkham's Vegetable Compound, a women's herbal tonic very popular from the late 1800s into modern times.

3. Key Constituents and Phytochemistry

Pyrrolizidine Alkaloids

The most toxicologically significant constituents of Packera aurea are its pyrrolizidine alkaloids (PAs). The PAs identified in the plant include florosenine, otosenine, and floridanine. Golden ragwort contains chemicals called pyrrolizidine alkaloids (PAs), some of which are toxic and can cause serious liver damage; PAs are present in different parts of the plant but are most concentrated in the roots.

Pyrrolizidine alkaloids are heterocyclic organic compounds that are naturally occurring secondary metabolites, synthesized by either plants or microorganisms. About 3–5% of all flowering plants contain PAs, which are among the most toxic constituents in plants and cause hepatotoxicity, with the major clinical symptom of veno-occlusive disease (VOD) and other toxicities including neurotoxicity and genotoxicity.

Sesquiterpenes

The plant also contains eremophilane sesquiterpenes, such as trans-9-oxofuranoeremophilane, 8α-ethoxy-10α-H-eremophilane, and caccalol. These sesquiterpene compounds belong to a structurally diverse class of plant secondary metabolites; their specific pharmacological roles in P. aurea have not been characterized in controlled human or animal studies to date.

Other Reported Constituents

Additional phytochemical classes have been reported in the general literature on Senecio aureus / Packera aurea, though systematic isolation and quantification studies are limited. These include flavonoids and tannins: flavonoids, known for their antioxidant properties, are part of the chemical composition of the plant. The presence of tannins with astringent properties has also been noted in the phytochemical literature on this species. No peer-reviewed pharmacognostic studies on P. aurea specifically quantifying these additional secondary metabolites were retrievable from PubMed or similarly authoritative databases, and claims about their concentrations or pharmacological contributions to the plant's traditional effects remain unverified by controlled research.

4. Mechanisms of Action

Pyrrolizidine Alkaloid Bioactivation and Hepatotoxicity

The most thoroughly characterized mechanism associated with golden ragwort's constituents concerns the hepatotoxicity of its PAs. The mechanism of toxicity of PAs is considered to be metabolic activation: PAs are first metabolized by cytochrome P450 enzymes to generate dehydropyrrolizidine (DHP), then DHP with strong electrophilicity attacks proteins or DNA molecules to generate adducts, and finally various signs of toxicity are induced.

Several PAs are genotoxic and carcinogenic, primarily in the liver, upon cytochrome P450 (CYP)-catalyzed activation into reactive pyrrolic and pyrrole-like metabolites. Hepatic sinusoidal obstruction syndrome (HSOS), the major clinical hepatic toxicity, is characterized by a prothrombotic hypofibrinolytic state due to damage of endothelial cells, leading to subsequent blockage of the central vein.

PAs induce acute effects including hepatic sinusoidal obstruction syndrome and pulmonary arterial hypertension; moreover, chronic exposure to low doses can induce cancer and liver cirrhosis in laboratory animals.

Traditional Uterotonic and Emmenagogue Activity

Traditional Eclectic and Physiomedical physicians attributed uterine tonic and emmenagogue properties to the plant. It is known to increase blood pressure and stimulate uterine contractions. These effects were characterized in 19th-century clinical practice as "tonic" rather than "forcing," meaning the plant was considered to act by improving uterine muscle tone rather than by directly stimulating contractions in a manner analogous to ergot, though a tea made of the whole plant was used for problems associated with the female reproductive tract and to speed childbirth, functioning as a substitute for ergot. No modern controlled mechanistic studies have identified specific molecular targets in the uterus attributable to P. aurea constituents.

5. Scientific Evidence by Area of Use

5.1 Gynecological Conditions (Menstrual Irregularities, Dysmenorrhea, Amenorrhea, Menopausal Symptoms)

This is by far the most extensively documented traditional use of golden ragwort and the area for which the most historical clinical observation has been recorded. However, the entire evidence base is historical and observational rather than modern controlled clinical research.

People traditionally use golden ragwort for irregular or painful menstrual periods and other conditions, but there is no good scientific evidence to support these uses. No randomized controlled trials, systematic reviews, or prospective clinical studies evaluating Packera aurea specifically for gynecological outcomes were identified in peer-reviewed databases at the time of this writing.

Despite serious safety concerns, people take golden ragwort to treat diabetes, high blood pressure, water retention, bleeding, chest congestion, and spasms; women use it for treating irregular or painful menstrual periods and symptoms of menopause, as well as to reduce pain and ease childbirth. There is insufficient information to know how golden ragwort might work for these purposes from a pharmacological standpoint confirmed by modern methods.

The herb's traditional reputation as a uterine tonic has persisted in some Western herbal medicine traditions. Senecio is described as a uterine tonic, often used for delayed or absent menstruation, and is also given to ease menopausal symptoms such as flushes and nervous and emotional upset; topically, it may be used as a douche in the treatment of leucorrhoea. These characterizations, however, derive from herbalist tradition rather than from clinical trials.

Evidence strength assessment: There is no modern controlled human clinical evidence for golden ragwort's efficacy in any gynecological indication. All evidence is pre-scientific, historically reported, and cannot be distinguished from placebo effects or natural disease resolution. Additionally, the PA content of the plant raises significant safety concerns that have essentially halted development of any clinical trial program.

5.2 Urinary Tract Conditions

Root and leaf tea was used by Amerindians to treat difficult urination. Some herbalists may still recommend a root tea from this plant for urinary problems; it has been studied and found to have little if any value for urinary problems.

Evidence strength assessment: Weak to absent. The available judgment from investigators is that the plant is ineffective for urinary conditions, and no supporting clinical trial evidence exists.

5.3 Respiratory Conditions

Golden ragwort was historically used for pulmonary conditions. Native Americans and early settlers used it to treat lung diseases such as tuberculosis. 19th-century Eclectic physicians described the lungs as strengthened by its use and noted it was beneficial for old and debilitated coughs, though describing it as capable of curing tubercular consumption was considered extravagant.

Evidence strength assessment: No clinical evidence. The respiratory applications are entirely traditional and have not been evaluated in controlled studies.

5.4 Cardiovascular and Haemostatic Applications

Despite serious safety concerns, people take golden ragwort to treat high blood pressure and bleeding. Like many other Compositae, the ragworts or groundsels were noted to have power over haemorrhagic conditions, whether arising from disease or from wounds. Some people put golden ragwort on the gums to stop bleeding after removal of a tooth.

Evidence strength assessment: No controlled clinical evidence. These uses are entirely based on historical observation.

5.5 Diabetes and Metabolic Conditions

Despite serious safety concerns, people take golden ragwort to treat diabetes and water retention. No pharmacological studies examining blood glucose-lowering mechanisms or clinical trials in diabetic populations were identified for Packera aurea.

Evidence strength assessment: No clinical or rigorous preclinical evidence for metabolic applications.

5.6 Overall Evidence Assessment

There are currently no modern, peer-reviewed, controlled human clinical trials evaluating Packera aurea for any indication. The entirety of the evidence base for efficacy is composed of pre-20th-century observational case reports from Eclectic and Physiomedical physicians, indigenous ethnobotanical records, and more recent secondary compilations of these historical accounts. The plant is not evaluated in any current Cochrane systematic review, National Institutes of Health Office of Dietary Supplements fact sheet, NCCIH evidence summary, European Medicines Agency (EMA) herbal monograph, or ESCOP monograph specifically for Packera aurea.

6. Body Systems and Health Areas of Association

Based on documented traditional use and phytochemical composition, golden ragwort has historically been associated with the following body systems:

Female Reproductive System: Primary traditional indication — an important treatment among Native Americans and Eclectic physicians for reproductive conditions.
Hepatic System (adverse/toxic): In contemporary times, P. aurea is not much used due to its saturated pyrrolizidine alkaloids, which can cause liver veno-occlusive disease upon metabolism.
Urinary System: The kidneys were said to feel its influence moderately well, especially when involved with female difficulties.
Pulmonary System: Historical use for respiratory weakness and chronic cough.
Gastrointestinal System: Some Eclectic physicians valued it in sub-acute and chronic dysentery, preferring it even to hydrastis as a tonic for such difficulties.
Haemostatic/Vascular System: Traditional use for bleeding conditions and haemorrhage control.

7. Dosage Forms and Reported Dosages

No modern clinical trials exist from which standardized dosage recommendations could be derived. The following dosage information reflects only what was reported in historical sources:

Decoction (William Cook, 1869): The pharmaceutical preparation described was a decoction prepared from one ounce of Senecio macerated in a pint of liquid.
Infusion: Historical Eclectic sources described warm infusions administered by the cupful for menstrual and uterine conditions; no specific dose quantification in milligrams or grams was recorded in the accessible sources.
Homeopathic tincture: In homeopathic practice, potencies range from tincture to third potency; "Senecin" was often used in the first trituration; administration was typically based on symptom severity, often in tincture or low potencies for acute conditions.
PA distribution across plant parts: A comparable Packera species study on a related Mexican species noted the presence of PAs and their N-oxides in the root (0.76% dry weight) and aerial parts (0.36% dry weight), illustrating the concentration gradient that exists across plant parts in this genus. Specific quantitative PA data for P. aurea was not found in peer-reviewed sources.

No verified contemporary dosage recommendations from government regulatory bodies, pharmacopoeias, or peer-reviewed clinical studies are available for Packera aurea.

8. Safety Considerations and Drug Interactions

Hepatotoxicity: The Primary Safety Concern

There is considerable concern about using golden ragwort as medicine because it contains hepatotoxic pyrrolizidine alkaloids (PAs), which may block blood flow in the veins and cause liver damage; hepatotoxic PAs may also cause cancer and birth defects.

Systematic literature review has concluded that herbal remedies containing PAs can induce liver damage, including hepato-sinusoidal obstruction syndrome or veno-occlusive disease, and that preventing overdose and monitoring long-term use of such preparations is essential.

The clinical presentation of PA-induced liver injury can include severe hepatic sinusoidal obstruction syndrome: depending on the dose and duration of exposure, all unsaturated PAs have the potential to cause PA-induced liver injury of different severities, including an instance of severe liver damage named hepatic sinusoidal obstruction syndrome (HSOS) — previously called hepatic veno-occlusive disease (HVOD) — which is associated with hepatomegaly, ascites, hyperbilirubinaemia, and hemorrhagic necrosis.

Cell studies on PA-containing herbal extracts have indicated dose-related toxicity, with necrosis at high concentrations and apoptosis and abnormalities of the cytoskeleton at lower concentrations.

PA Concentration and Distribution in the Plant

Golden ragwort contains pyrrolizidine alkaloids, some of which are toxic and can cause serious liver damage; PAs are present in different parts of the plant but are most concentrated in the roots. White-tailed deer do not prefer the foliage of golden ragwort and often leave it alone due to the low-toxicity alkaloid (pyrrolizidine) in its leaves.

Contemporary Regulatory and Safety Position

In contemporary times, P. aurea is not much used due to its saturated pyrrolizidine alkaloids, which can cause liver veno-occlusive disease upon metabolism; if used, a PA-free extract would be required. PA-free extracts would be required for safe use for courses exceeding two weeks.

Golden ragwort preparations that are not certified and labeled "hepatotoxic PA-free" are considered unsafe. It is also unsafe to apply golden ragwort to broken skin, as the dangerous chemicals can be absorbed quickly through broken skin and lead to dangerous body-wide toxicity; consumers should avoid skin products that are not certified and labeled "hepatotoxic PA-free."

Pregnancy and Lactation

Golden ragwort preparations that contain PAs are likely unsafe when taken by mouth during pregnancy. It is unsafe to use golden ragwort preparations that might contain hepatotoxic PAs during pregnancy. No safety data for lactation or pediatric populations were identified in peer-reviewed sources.

Alcohol Interaction

Herbal remedies containing pyrrolizidine alkaloids can induce liver damage, including hepato-sinusoidal obstruction syndrome or veno-occlusive liver disease; some individuals who misuse alcohol also consume teas and/or herbal remedies containing PAs, and the interaction or additive toxicity of alcohol to PA toxicity has been identified as a concern requiring investigation.

Potential Genotoxicity and Carcinogenicity

Contamination with 1,2-unsaturated pyrrolizidine alkaloids is a serious problem for certain phytomedicines; several of these PAs are genotoxic and carcinogenic, primarily in the liver, upon cytochrome P450-catalyzed activation into reactive metabolites. PAs can damage the liver and lungs and possibly cause cancer.

Confusion with Other Species

Care must be taken not to confuse golden ragwort (Senecio aureus) with other species of ragwort, such as alpine ragwort and tansy ragwort, all of which have distinct phytochemical profiles and toxicity levels, though all contain PAs.

References

Health Conditions

Health conditions that Golden ragwort may help support.

No conditions available.

Body Systems

Body systems that Golden ragwort may help support.

No body systems available.