Herbal Monograph
Elecampane
Inula helenium L.
Asteraceae (Compositae)
Premier warming respiratory herb for chronic coughs, bronchial catarrh, and d...
Overview
Plant Description
Robust, upright herbaceous perennial, 90-180 cm (3-6 ft) tall, occasionally reaching 2.5 m under favorable conditions. Stem erect, stout, branching near the top, furrowed, and densely pubescent. Basal leaves very large, ovate-elliptic, up to 40-80 cm long and 15-30 cm wide, on long petioles, with a coarsely toothed margin, dark green and rough-hairy on the upper surface, densely velvety-tomentose (white-woolly) beneath with a prominent white midrib. Cauline (stem) leaves progressively smaller upward, sessile and semi-amplexicaul (clasping the stem), broadly ovate, also tomentose beneath. Flower heads (capitula) 6-8 cm in diameter, solitary or in loose terminal clusters of 2-3, resembling small sunflowers. Ray florets numerous, narrow, bright yellow, 2-3 cm long, spreading outward. Disc florets tubular, yellow. Involucral bracts imbricate in several rows, the outer broad, herbaceous, and woolly; the inner narrower, scarious at tips. Fruit a four-angled achene, 4-5 mm long, glabrous, with a pappus of united bristles. Rhizome thick, fleshy, cylindrical, branching, brownish-grey externally, whitish internally, aromatic with a characteristic camphoraceous odor and warm, bitter, somewhat pungent taste.
Habitat
Prefers moist, well-drained, loamy or clay soils in full sun to partial shade. Thrives in meadows, roadsides, hedgerows, woodland edges, and damp grasslands. Tolerates moderately heavy soils and partial shade but flowers best in full sun. Hardy to USDA zone 3. Naturalizes readily in disturbed ground with adequate moisture.
Distribution
Native to central and southern Europe, extending eastward through temperate Asia to western China. Widely naturalized across much of Europe (including the British Isles, Scandinavia), temperate North America (eastern United States and Canada), and parts of Japan. Naturalized populations persist from historical cultivation for medicinal use. Cultivated commercially in parts of eastern Europe (Bulgaria, Hungary), the Netherlands, and Germany.
Parts Used
Root and rhizome (Inulae radix / Helenii radix)
Preferred: Dried root for decoction; tincture (fresh or dried root); dried root powder in capsules
The dried root and rhizome are the official medicinal part used across all Western herbal traditions. The British Herbal Pharmacopoeia specifies 'dried rhizome and roots' as the official drug. The thick, fleshy rhizome is the primary storage organ for inulin (up to 44% of dry weight) and contains the highest concentration of sesquiterpene lactones (alantolactone, isoalantolactone) in the volatile oil fraction. The root has a characteristic camphoraceous, slightly bitter and pungent taste. Second- or third-year roots are preferred for medicinal use as they contain the highest concentration of active constituents.
Key Constituents
Sesquiterpene lactones (volatile oil fraction)
The sesquiterpene lactone fraction is the principal driver of elecampane's antimicrobial, expectorant, and anthelmintic activity. Alantolactone and isoalantolactone are the most studied compounds and have demonstrated activity against Mycobacterium tuberculosis, Staphylococcus aureus (including MRSA), and various fungi. These compounds also contribute to the herb's warming, stimulating, and drying energetic quality. The volatile oil containing these lactones is released during decoction and is extracted efficiently in hydroethanolic tinctures. However, the sesquiterpene lactones are also responsible for the contact dermatitis risk associated with the plant, as they are moderate skin sensitizers.
Polysaccharides (Inulin-type fructans)
The exceptionally high inulin content makes elecampane root one of the richest natural sources of prebiotic fiber. Inulin is not digested by human enzymes but is fermented by beneficial colonic bacteria, producing short-chain fatty acids (particularly butyrate) that nourish colonocytes and support gut barrier integrity. This prebiotic action underpins the traditional use of elecampane for digestive support. The inulin fraction is water-soluble and extracted in decoctions and infusions. Note: the high inulin content means that some individuals with FODMAP sensitivity may experience gas and bloating from elecampane preparations.
Volatile oil (essential oil — non-lactone fraction)
The non-lactone fraction of the volatile oil contributes to the aromatic and carminative properties of elecampane but is considered secondary to the sesquiterpene lactone fraction in therapeutic significance. The overall essential oil yield is 1-4% of dried root.
Triterpenes and sterols
Minor constituents contributing background anti-inflammatory and tissue-protective activity. Not considered primary drivers of elecampane's therapeutic profile.
Other constituents
The mucilage and pectin fractions complement the stimulating sesquiterpene lactones by providing a soothing, demulcent action on irritated respiratory and digestive mucosa. This combination of stimulating expectorant (sesquiterpene lactones) and soothing demulcent (mucilage) is characteristic of elecampane's therapeutic profile and explains its traditional reputation as both a stimulating and a soothing respiratory herb.
Herbal Actions
Elecampane is one of the premier stimulating expectorants in Western herbalism. The sesquiterpene lactones (alantolactone, isoalantolactone) in the volatile oil stimulate the bronchial mucosa, promoting secretion and expectoration of tenacious, thick mucus from the respiratory tract. This action is enhanced by the warming, drying energetic quality of the herb. Indicated for productive coughs with copious thick sputum and for chronic bronchial congestion. The BHP lists 'expectorant' as a primary action.
[1, 2, 3]Kills or inhibits the growth of microorganisms
Broad-spectrum antimicrobial activity demonstrated in vitro. Alantolactone and isoalantolactone are active against Mycobacterium tuberculosis (MIC 32 µg/mL; Cantrell et al., 1999), Staphylococcus aureus including MRSA strains (100% efficacy against 200 clinical isolates; O'Shea et al., 2009), and various fungal species. The antimicrobial action supports the traditional use of elecampane in chronic respiratory infections, including its historical reputation as a remedy for tuberculosis and other deep-seated pulmonary infections.
[1, 7, 8, 9]Reduces cough reflex and soothes irritated bronchial mucosa. The BHP lists 'antitussive' as a primary action. The mechanism involves both central cough suppression (attributed to the volatile oil fraction) and peripheral soothing of irritated mucosa (attributed to the mucilage fraction). Particularly effective for chronic, irritating, non-productive coughs and for the lingering cough following respiratory infections.
[1, 2]Promotes perspiration
Mild diaphoretic action promoting perspiration. Listed in the BHP as a secondary action. The warming quality of the essential oil stimulates peripheral circulation and mild sweating. Most relevant in the context of feverish respiratory infections where promoting perspiration is therapeutically desirable.
[1]The bitter principles stimulate digestive secretions (gastric acid, bile, pancreatic enzymes) and improve appetite and assimilation. Hoffmann describes elecampane as beneficial for 'weak digestion' and notes its bitter tonic quality. The combination of bitter tonic action with the prebiotic inulin content gives elecampane a dual role in supporting both upper and lower digestive function.
[2, 11]Relieves intestinal gas and bloating
The volatile oil fraction reduces intestinal gas and cramping. The warming, aromatic quality of elecampane root helps dispel flatulence and ease digestive discomfort. This action is synergistic with the bitter tonic effect in supporting overall digestive function.
[2]Traditional use against intestinal parasites (roundworms, threadworms, hookworms). Alantolactone has demonstrated anthelmintic activity in vitro and in animal models. This historical use was documented by Dioscorides and continued through the Eclectic tradition. Modern clinical evidence for anthelmintic use is limited.
[11, 12]The very high inulin content (up to 44% of dry root) acts as a selective prebiotic, promoting growth of beneficial Bifidobacterium and Lactobacillus species in the colon. This action is distinct from the herb's direct antimicrobial effects and contributes to overall gut health and immune modulation through the gut-associated lymphoid tissue (GALT). Inulin fermentation produces short-chain fatty acids, particularly butyrate, which nourish colonocytes.
[2]Therapeutic Indications
Respiratory System
Chronic bronchitis with copious mucus expectoration
One of elecampane's most established indications across all Western herbal traditions. The BHP specifically lists 'bronchial catarrh' as an indication. Hoffmann recommends elecampane as a primary herb for chronic bronchitis with persistent productive cough. The combination of stimulating expectorant, antimicrobial, and antitussive actions makes it particularly well-suited for chronic bronchial infections with thick, tenacious sputum.
[1, 2, 3]Tracheal and bronchial catarrh
BHP specific indication: 'bronchial and tracheal catarrh.' The stimulating expectorant action targets the tracheal and bronchial mucosa, promoting clearance of mucus from the upper and lower airways. Particularly indicated when catarrh is chronic, thick, and difficult to expectorate.
[1]Persistent cough (chronic, non-resolving)
Elecampane has been described as a specific remedy for 'old coughs' — persistent, chronic coughs that fail to resolve after acute infection. Hoffmann recommends it for irritating cough with copious expectoration. The Eclectic physicians (Felter and Lloyd) described it as 'of greatest service in bronchial irritation, with cough of a persistent, teasing character.'
[1, 2, 11]Whooping cough (pertussis)
BHP includes 'whooping cough in infants' among its indications. Traditional use in European herbalism for paroxysmal coughing conditions. Clinical evidence is limited to historical reports. The antitussive and antimicrobial actions provide pharmacological rationale.
[1, 12]Pulmonary tuberculosis (adjunctive, historical)
Elecampane has a long historical reputation as a remedy for tuberculosis, dating from ancient Greek and Roman medicine through the Eclectic tradition. The BHP lists 'cough associated with pulmonary tuberculosis' as an indication. Modern research provides partial validation: alantolactone and isoalantolactone demonstrate antimycobacterial activity in vitro with MIC values of 32 µg/mL against M. tuberculosis H37Rv (Cantrell et al., 1999). However, in vitro activity does not constitute clinical evidence, and elecampane should NOT be used as a substitute for conventional anti-tuberculosis chemotherapy. Potential adjunctive role warrants further research.
[1, 7, 11]Asthma (humid/congestive type)
Traditional use for asthma characterized by cold, damp, congestive presentation with copious white sputum. Felter and Lloyd note relief of 'some cases of humid asthma.' Energetically specific for cold, damp asthma — NOT appropriate for hot, dry, spasmodic asthma patterns. Clinical evidence limited to traditional reports.
[2, 11]gastrointestinal
Weak digestion with poor appetite and bloating
Bitter tonic and carminative actions stimulate digestive secretions, improve appetite, and reduce flatulence. Hoffmann describes elecampane as beneficial for 'weakness of the digestive organs.' Felter and Lloyd describe it as a tonic in 'weakness of the digestive organs.' The high inulin content additionally supports lower bowel health through prebiotic effects. Indicated for cold, sluggish digestion with feelings of heaviness and distension after eating.
[2, 11]Intestinal dysbiosis (prebiotic support)
The very high inulin content (up to 44% of dried root) provides significant prebiotic substrate for beneficial gut bacteria. While the prebiotic effects of inulin are well-established in nutritional science, the specific use of elecampane root as a prebiotic agent in clinical herbalism is a modern application building on traditional digestive use. May be beneficial as part of a gut restoration protocol.
[2]Intestinal parasites (roundworm, threadworm)
Historical use as an anthelmintic, documented from Dioscorides through the Eclectic physicians. Alantolactone has demonstrated in vitro anthelmintic activity. Felter and Lloyd reference its use against intestinal worms. Modern clinical evidence is insufficient to recommend as a primary anthelmintic treatment.
[11, 12]Skin / Integumentary
Skin infections and eruptions (topical, historical)
The common name 'scabwort' reflects the traditional topical use for scabby skin conditions, mange, and skin infections in both humans and animals. The name 'horseheal' derives from veterinary use for skin conditions in horses. The antimicrobial sesquiterpene lactones provide pharmacological rationale. However, topical use carries a risk of contact dermatitis due to the same sesquiterpene lactones, so patch testing is advisable before topical application.
[12]Energetics
Temperature
warm
Moisture
dry
Taste
Tissue States
cold/depression, damp/stagnation, damp/relaxation
Elecampane is warming and drying in Western energetic assessment, with a complex taste profile of bitter, pungent, and sweet. The pungent taste reflects the stimulating, dispersing action of the volatile oil on congested respiratory and digestive tissues. The bitter taste stimulates digestive secretions and promotes drainage. The sweet taste reflects the very high inulin content and the nourishing, restorative quality of the herb over longer-term use. Elecampane is specifically indicated for cold, damp, congested tissue states — characterized by copious thick white/clear mucus, chronic wet cough, sluggish digestion with bloating, and a pale, boggy, swollen tongue with a thick white coating. It is one of the quintessential warming lung herbs in Western herbalism, moving stagnant fluids and restoring tone to lax, damp tissues.
Traditional Uses
Greco-Roman medicine
- Decoction of dried root for coughs, orthopnoea, and respiratory distress
- Root lozenges with honey for cough and shortness of breath
- Treatment for flatulence, digestive weakness, and ruptures
- Promotion of urination and menstruation
- Antidote to poisons and venomous bites
- Aid to digestion — Pliny records that Julia Augusta ate the root daily
"Dioscorides (De Materia Medica, c. 65 CE) recommends a decoction of the dried root to promote urination and menstruation, and 'the root itself' as a lozenge made with honey for cough, orthopnoea, ruptures, spasms, and flatulence. Pliny (Natural History, c. 77 CE) records: 'Julia Augusta let no day pass without eating some of the roots of Enula, considered to help digestion and cause mirth.' Pliny also affirmed that the root 'being chewed fasting, doth fasten the teeth.' Galen recommended elecampane for sciatica and 'passions of the hucklebone.'"
Medieval and Renaissance European herbalism
- Candied root as a confection and digestive aid
- Treatment for pulmonary diseases and chronic cough
- Remedy for sciatica and joint pains
- Protection against plague and pestilence
- Culpeper: to warm a cold and windy stomach, resist poison, strengthen sight
"Gerard (Herball, 1597) tells us: 'It took the name Helenium of Helena, wife of Menelaus, who had her hands full of it when Paris stole her away into Phrygia.' In Medieval Europe, the roots were candied and eaten as a confection and digestive aid. Culpeper (The English Physician, 1652) states: 'The fresh roots of Elecampane preserved with sugar, or made into a conserve, or a syrup, are effectual to warm a cold and windy stomach, to resist poison, to help old coughs and shortness of breath, helps ruptures and provokes lust.' The plant appears frequently in Anglo-Saxon medical manuscripts predating the Norman Conquest."
Celtic and Welsh medicine
- Sacred plant associated with elves and fairy folk (hence 'elfwort', 'elf-dock')
- Treatment for respiratory illness and chest complaints
- Used in protective charms and folk magic
"Elecampane was sacred to the ancient Celts, who attributed the plant to the elves and fairy folk — hence the folk names 'elfwort' and 'elf-dock.' It is the 'Marchalan' of the Welsh physicians of the thirteenth century (Meddygon Myddfai). In Gaelic tradition it was known as 'Ailleann' or 'creamh' and used for chest complaints and as a protective herb."
[12]
Eclectic medicine (American)
- Stimulating aromatic expectorant for chronic pulmonary conditions
- Tonic for weakness of the digestive organs
- Treatment for persistent teasing cough with copious expectoration
- Relief of night sweats in chronic respiratory disease
- Some cases of humid asthma
"Felter and Lloyd (King's American Dispensatory, 1898): 'Inula is an aromatic stimulant and tonic, and is much used in chronic pulmonary affections and weakness of the digestive organs. Night-sweats are relieved by Inula, as are some cases of humid asthma, and, by its tonic properties, it tends to sustain the strength of the patient in chronic disorders of the respiratory tract.' And: 'Inula is of greatest service in bronchial irritation, with cough of a persistent, teasing character, with copious expectoration.'"
[11]
British Herbal Pharmacopoeia
- Bronchial and tracheal catarrh
- Cough associated with pulmonary tuberculosis
- Bronchitis
- Whooping cough in infants
"The British Herbal Pharmacopoeia (1983) lists elecampane with therapeutic actions: antitussive, antiseptic expectorant, diaphoretic, and bactericidal. Indications include respiratory mucosal catarrh (tracheal, bronchial), cough and phthisis associated with pulmonary tuberculosis, bronchitis, and whooping cough in infants."
[1]
Modern Research
Antimycobacterial activity of sesquiterpene lactones
Bioassay-guided isolation of antimycobacterial eudesmanolides from Inula helenium root extracts, demonstrating activity against Mycobacterium tuberculosis H37Rv.
Findings: Cantrell et al. (1999) conducted bioassay-guided fractionation of root extracts of I. helenium and isolated the eudesmanolide sesquiterpene lactones alantolactone, isoalantolactone, and 11αH,13-dihydroisoalantolactone from chromatographic fractions that exhibited significant activity against M. tuberculosis. Alantolactone, isoalantolactone, and alloalantolactone showed minimum inhibitory concentrations (MICs) of 32 µg/mL against M. tuberculosis H37Rv. The semi-synthetic derivative 5α-epoxyalantolactone showed enhanced activity with a MIC of 8 µg/mL. These findings provide partial pharmacological validation for the historical use of elecampane in tuberculosis management, though the MIC values are considerably higher than first-line anti-TB drugs.
Limitations: In vitro study only. MIC values (32 µg/mL) are substantially higher than conventional anti-TB drugs (isoniazid MIC typically 0.02-0.2 µg/mL). No clinical trials have evaluated elecampane as adjunctive TB therapy. Bioavailability of alantolactone after oral administration is uncertain. These findings do not support use of elecampane as monotherapy for tuberculosis.
[7]
Anti-MRSA activity
In vitro evaluation of I. helenium extract against 200 clinical Staphylococcus aureus isolates including MRSA strains from Ireland.
Findings: O'Shea et al. (2009) tested I. helenium root extract against 200 clinically significant Irish S. aureus isolates, including both methicillin-resistant (MRSA) and methicillin-sensitive (MSSA) strains, using drop test and microbroth dilution methods. The extract was 100% effective against all 200 isolates tested, with 93% of isolates falling within the strongest activity categories. Minimum bactericidal concentration values ranged from 0.9 to 9.0 mg/mL. Crucially, the extract was equally effective against antibiotic-resistant and antibiotic-sensitive strains, suggesting the antimicrobial mechanism differs from conventional beta-lactam antibiotics.
Limitations: In vitro study. Clinical trials of topical or systemic application against staphylococcal infections have not been conducted. The extract concentrations required may not be achievable systemically at standard oral doses. Topical application for wound infections may be more feasible but remains untested in controlled trials.
[8]
Comprehensive antimicrobial potential review (Irish-naturalised material)
Assessment of antimicrobial sesquiterpene lactones from roots of elecampane naturalised in Ireland, with chromatographic characterization.
Findings: Kenny et al. (2022) conducted the first assessment of antimicrobial sesquiterpene lactones from roots of I. helenium naturalised in Ireland. Traditional hydro-ethanolic extracts were prepared from multi-origin elecampane roots and subjected to bioactivity-guided fractionation. Anti-staphylococcal fractions were characterized by HPLC-DAD and ¹H NMR. The study confirmed the antimicrobial activity of the sesquiterpene lactone fraction and provided modern analytical characterization of the bioactive compounds. The authors argue that the Commission E negative monograph (1990) should be reconsidered in light of accumulating evidence of significant antimicrobial activity.
Limitations: Primarily a laboratory characterization study. No clinical data. The call to reconsider the Commission E negative monograph is based on in vitro evidence only and would require clinical trial data to support regulatory re-evaluation.
[9]
Anti-inflammatory and anticancer activity of isoalantolactone
Review of pharmacological effects of isoalantolactone across multiple disease models.
Findings: Multiple studies have demonstrated that isoalantolactone exhibits anti-inflammatory effects through suppression of NF-κB signaling and inhibition of pro-inflammatory cytokine production (TNF-α, IL-6, IL-1β). Anticancer activity has been demonstrated in vitro against multiple cell lines. The compound also shows neuroprotective and antidepressant-like activity in animal models. These findings suggest the pharmacological profile of elecampane's sesquiterpene lactones extends well beyond the traditional respiratory and digestive applications.
Limitations: The majority of evidence derives from in vitro and animal studies. Clinical trials for anti-inflammatory and anticancer applications have not been conducted. Bioavailability studies suggest high hepatic first-pass metabolism and low oral bioavailability of alantolactone in rats, raising questions about systemic availability at standard oral doses.
[10]
Preparations & Dosage
Decoction
Strength: 1.5-4 g dried root per 250 mL water
Add 1.5-4 g of dried, coarsely chopped or powdered elecampane root to 250 mL of cold water. Bring to a boil, then reduce heat and simmer gently for 15-20 minutes. Strain while hot. The decoction has a characteristic camphoraceous aroma and warm, bitter, slightly pungent taste.
1.5-4 g dried root per cup, 3 times daily
3 times daily
2-4 weeks for acute bronchial conditions; reassess at 4 weeks for chronic use
BHP includes 'whooping cough in infants' among indications; however, use in children should be under qualified practitioner supervision only. Half adult dose for children 6-12 years.
Decoction is the traditional and preferred method of preparation for elecampane root, as simmering extracts both the water-soluble inulin and polysaccharides and the volatile sesquiterpene lactones more effectively than a simple infusion. The root is too tough and dense for an infusion to extract adequately. The BHP specifies decoction as the preparation method. Cover the pot during simmering to minimize loss of volatile oil.
Tincture
Strength: 1:5 dried root in 25% ethanol (BHP specification); 1:2 fresh root in 45-60% ethanol
Macerate dried elecampane root in 25% ethanol at a ratio of 1:5 for 2-4 weeks. Press and filter. Fresh root tincture prepared at 1:2 ratio in 45-60% ethanol.
1.5-4 mL of 1:5 tincture (in 25% ethanol), 3 times daily. Alternatively, BHP: 1:5 in 25% ethanol, dose 1.5-4 mL three times daily.
3 times daily
2-4 weeks for acute conditions; reassess at 4 weeks for chronic use
Not recommended for children under 6 without practitioner guidance. Children 6-12: half adult dose under supervision.
The BHP specifies a 1:5 tincture in 25% ethanol, which is a lower alcohol percentage than many tinctures — this extracts both the water-soluble inulin fraction and the lipophilic sesquiterpene lactones. Some practitioners prefer a higher alcohol percentage (45-60%) for fresh root preparations to better extract the volatile oil fraction. Tincture provides a more concentrated and convenient dosage form than decoction.
capsule/powder
Strength: Powdered dried root, typically 500 mg per capsule
Dried, powdered elecampane root encapsulated in gelatin or vegetable capsules.
1.5-4 g dried root powder daily, divided into 2-3 doses
2-3 times daily with meals
2-4 weeks, reassess
Not recommended without practitioner guidance
Capsules provide a convenient dosage form for patients who dislike the strong bitter taste of decoction or tincture. However, the decoction or tincture forms are traditionally preferred as they may provide better extraction and bioavailability of active constituents. The high inulin content in the powder contributes prebiotic effects.
[2]
Syrup
Strength: Double-strength decoction combined 1:1 with honey
Prepare a strong decoction (double strength) using 8 g dried root per 250 mL water, simmered for 20 minutes. Strain and add equal volume of honey or sugar while still warm. Stir until dissolved. Store in a clean glass bottle in the refrigerator.
5-10 mL (1-2 teaspoons), 3-4 times daily
3-4 times daily, or as needed for cough
Duration of cough; use within 2-4 weeks of preparation (refrigerated)
2.5-5 mL for children 6-12 years, under practitioner guidance
Syrup is the most palatable preparation and is particularly suitable for cough — the honey itself contributes demulcent and antimicrobial properties. This preparation has historical precedent: Dioscorides recommended elecampane root lozenges made with honey for cough. Culpeper describes 'the fresh roots preserved with sugar, or made into a conserve, or a syrup' as effective for respiratory complaints. In medieval Europe, elecampane root was candied as a confection with medicinal properties.
Safety & Interactions
Class 1
Can be safely consumed when used appropriately (AHPA Botanical Safety Handbook)
Contraindications
Elecampane belongs to the Asteraceae family and contains sesquiterpene lactones (alantolactone, isoalantolactone) that are established contact allergens. Cross-reactive allergic contact dermatitis may occur in individuals sensitized to other Asteraceae species (ragweed, chrysanthemum, chamomile, arnica, etc.). Alantolactone is a stronger sensitizer than isoalantolactone. Individuals with known ragweed allergy should exercise particular caution, as the Asteraceae cross-reactivity risk is clinically significant.
Drug Interactions
| Drug / Class | Severity | Mechanism |
|---|---|---|
| Antidiabetic medications (insulin, metformin, sulfonylureas) (Hypoglycemic agents) | theoretical | Some research suggests elecampane extracts may lower blood glucose levels. Theoretical additive hypoglycemic effect with concurrent use of antidiabetic medications. |
| Antihypertensive medications (Antihypertensives) | theoretical | Some sources suggest elecampane may lower blood pressure. Theoretical additive hypotensive effect. |
| Sedative/hypnotic medications (CNS depressants) | theoretical | Some sources suggest elecampane may have mild sedative properties. Theoretical additive CNS depression. |
Pregnancy & Lactation
Pregnancy
possibly unsafe
Lactation
insufficient data
Traditional sources caution against use in pregnancy. Dioscorides specifically lists elecampane as a promoter of menstruation. Some traditional sources classify it as a mild emmenagogue and potential uterine stimulant, supporting avoidance during pregnancy. The AHPA Botanical Safety Handbook (1st edition, 1997) listed elecampane in Class 1 (safe when appropriately used), though sources disagree on pregnancy safety specifically. Given the traditional emmenagogue reputation, the presence of bioactive sesquiterpene lactones, and the lack of modern safety data in pregnancy, avoidance during pregnancy is the prudent recommendation. Insufficient data on excretion into breast milk; avoid during lactation as a precaution.
Adverse Effects
References
Monograph Sources
- [1] British Herbal Medicine Association. British Herbal Pharmacopoeia. BHMA (1983)
- [2] Hoffmann, D.. Medical Herbalism: The Science and Practice of Herbal Medicine. Healing Arts Press (2003) . ISBN: 978-0892817498
- [3] Mills, S., Bone, K.. Principles and Practice of Phytotherapy: Modern Herbal Medicine (2nd edition). Churchill Livingstone / Elsevier (2013) . ISBN: 978-0443069925
- [4] Gardner, Z., McGuffin, M. (eds.). American Herbal Products Association's Botanical Safety Handbook (2nd edition). CRC Press (2013) . ISBN: 978-1466516946
- [5] Blumenthal, M., Busse, W.R., Goldberg, A., et al.. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines — Inula helenium (negative monograph). American Botanical Council / Integrative Medicine Communications (1998) . ISBN: 978-0965555500
- [6] Brinker, F.. Herbal Contraindications and Drug Interactions (4th edition). Eclectic Medical Publications (2010) . ISBN: 978-1888483147
Clinical Studies
- [7] Cantrell, C.L., Abate, L., Fronczek, F.R., et al.. Antimycobacterial eudesmanolides from Inula helenium and Rudbeckia subtomentosa. Planta Medica (1999) ; 65 : 351-355 . DOI: 10.1055/s-1999-14001 . PMID: 10364842
- [8] O'Shea, S., Lucey, B., Cotter, L.. In vitro activity of Inula helenium against clinical Staphylococcus aureus strains including MRSA. British Journal of Biomedical Science (2009) ; 66 : 186-189 . DOI: 10.1080/09674845.2009.11730271 . PMID: 20095126
- [9] Kenny, C.-R., Stojakowska, A., Furey, A., Lucey, B.. From Monographs to Chromatograms: The Antimicrobial Potential of Inula helenium L. (Elecampane) Naturalised in Ireland. Molecules (2022) ; 27 : 1406 . DOI: 10.3390/molecules27041406 . PMID: 35209195
- [10] Wang, J., et al.. Isoalantolactone: a review on its pharmacological effects. Frontiers in Pharmacology (2024) ; 15 : 1453205 . DOI: 10.3389/fphar.2024.1453205
Traditional Texts
- [11] Felter, H.W., Lloyd, J.U.. King's American Dispensatory (18th edition, 3rd revision). Ohio Valley Company (1898)
- [12] Grieve, M.. A Modern Herbal. Jonathan Cape / Dover Publications (1931)
- [13] Culpeper, N.. The English Physician (Culpeper's Complete Herbal). Peter Cole (1652)
- [14] Gerard, J.. The Herball or Generall Historie of Plantes. John Norton (1597)
- [15] Dioscorides, P.. De Materia Medica. (65)
- [16] Pliny the Elder. Naturalis Historia (Natural History). (77)
Pharmacopeias & Reviews
- [17] British Herbal Medicine Association. British Herbal Pharmacopoeia — Inulae radix (Elecampane Root). BHMA (1983)
Last updated: 2026-03-02 | Status: review
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