Elecampane Inula (Inula britannica): Benefits, Dosage, Safety & Evidence

Frequently asked questions

How does elecampane work as an expectorant?

Elecampane contains inulin and sesquiterpene lactones, particularly alantolactone, which provide its expectorant action. These compounds stimulate the mucous membranes of the respiratory tract, increasing mucus secretion and helping to loosen phlegm. The herb also demonstrates antimicrobial and anti-inflammatory properties in preclinical studies. In Traditional Chinese Medicine, it is classified as Xuan Fu Hua, used specifically for transforming phlegm and directing qi downward. Evidence level: B (preclinical and traditional use support).

Does elecampane interact with any medications?

Elecampane may interact with antidiabetic medications due to its inulin content, which can affect blood glucose levels. Theoretically, it may enhance the effects of anticoagulant medications, though clinical evidence is limited. Due to its effects on gastric motility, it may alter the absorption of orally administered drugs. Patients taking diabetes medications, blood thinners, or those scheduled for surgery should consult a healthcare provider before use. Evidence level: C (theoretical interactions based on pharmacology).

What is the recommended dosage for elecampane?

The traditional adult dosage for elecampane is 3-9 grams of dried flower prepared as a decoction daily, or 300mg to 1 gram of standardized extract. For respiratory conditions, it is typically taken as a tea simmered for 10-15 minutes to extract active compounds. Dosage should not exceed recommended amounts, and treatment duration should be limited. Consult a qualified herbalist or healthcare provider for individualized dosing. Evidence level: Traditional.

Is elecampane safe during pregnancy and breastfeeding?

Elecampane is contraindicated during pregnancy and breastfeeding. The herb contains alantolactone and other sesquiterpene lactones that may stimulate uterine contractions and potentially cause miscarriage. There is insufficient safety data for use during lactation, and active compounds may pass into breast milk. Women who are pregnant, planning pregnancy, or breastfeeding should avoid elecampane entirely. Alternative expectorant herbs with established pregnancy safety profiles should be considered instead. Evidence level: D (expert opinion and traditional contraindications).

What are the side effects of elecampane?

Common side effects of elecampane include gastrointestinal upset, nausea, and diarrhea, particularly when taken on an empty stomach. Allergic reactions may occur, especially in individuals with Asteraceae family sensitivities, manifesting as skin rashes or respiratory symptoms. The herb can cause staining of teeth or skin due to its resinous compounds. Discontinue use if allergic symptoms develop. Those with known allergies to plants in the daisy family should avoid elecampane entirely. Evidence level: Traditional.

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 30 PubMed articles · model: gemma4:31b

Summary

Inula britannica is a medicinal herb from the Asteraceae family used traditionally for its anti-inflammatory, antioxidant, and neuroprotective properties [PMID:42333096, PMID:20336001].

Background

Inula britannica is a yellow-flowering plant of the Asteraceae family [PMID:42333096]. It is utilized in traditional Chinese and Kampo medicines, and is also used as a traditional plant medicine in Iran [PMID:10815011, PMID:33961997].

Traditional uses

Traditionally used as a remedy for nausea, hiccups, excessive sputum, cold-related coughs, wheezing, and vomiting [PMID:10815011, PMID:33961997]. In Iranian folk medicine, it is utilized for the treatment of arthritis and back pain [PMID:29567278]. Young shoots are edible and flowers are used as tea [PMID:42333096].

Active compounds

The herb is rich in sesquiterpenoids (including sesquiterpene lactones and dimers such as 1,6-O,O-diacetylbritannilactone), flavonoids (such as quercetin and luteolin), and terpenoids [PMID:35026701, PMID:30428197, PMID:20336001]. Essential oils contain viridiflorol and himachalol [PMID:28278671].

Mechanism of action

Anti-inflammatory effects are mediated by suppressing pro-inflammatory mediators (NO, PGE2, TNF-α, IL-6, IL-1β) and downregulating iNOS, COX-2, and the NF-κB and MAPK signaling pathways [PMID:37627631, PMID:35026701]. Hepatoprotective effects involve modulating the SIRT1-AMPK/Nrf2/NF-κB signaling pathway [PMID:39606269] and affecting the balance between Th1 and Th2 differentiation by inhibiting macrophage IL-12 and promoting IL-10 [PMID:10815011].

Clinical evidence

Evidence DAlcohol-induced liver injury

Ethanolic extract of I. britannica (EEIB) showed protective effects against lipid metabolism, inflammation, and oxidative stress in mice [PMID:39606269]

Evidence DPain (Antinociceptive)

Flower essential oil (100 mg/kg) showed noteworthy antinociceptive effects in mice across multiple pain models [PMID:29567278]

Evidence DHepatic injury (LPS/PA induced)

Administration improved survival rates in mice and reduced cytokine fluctuation in the spleen [PMID:10815011]

Evidence DNeuroinflammation/Cognitive deficit

The sesquiterpene lactone OABL reduced LPS-induced neuroinflammation in microglial cells and showed neuroprotective effects in PC12 cells [PMID:35026701]

Evidence DTriple-Negative Breast Cancer

Certain sesquiterpenoids from I. britannica flowers displayed antiproliferative potency against TNBC cells [PMID:36014473]

Safety & adverse effects

Sesquiterpenes are noted to be toxic, and independent safety studies are lacking [PMID:42333096]. Species in the Compositae family, including elecampane, are suspected of causing allergic plant contact dermatitis [PMID:12492516].

Evidence summary

The current evidence is primarily based on in vitro cell studies and in vivo animal models (Level D), with a focus on phytochemical characterization and pharmacological potential. No human clinical trials were provided for I. britannica.

PubMed sources

1.PMID: 35026701 (2022) — Cognitive enhancement and neuroprotective effects of OABL, a sesquiterpene lactone in 5xFAD Alzheimer's disease mice model. · Redox biology
2.PMID: 37627631 (2023) — Development and Characterization of Inula britannica Extract-Loaded Liposomes: Potential as Anti-Inflammatory Functional Food Ingredients. · Antioxidants (Basel, Switzerland)
3.PMID: 37454617 (2023) — Fermentation of Inula britannica using Lactobacillus plantarum SY12 increases of epigallocatechin gallate and attenuates toxicity. · Food chemistry
4.PMID: 39606269 (2024) — Inula britannica ameliorates alcohol-induced liver injury by modulating SIRT1-AMPK/Nrf2/NF-κB signaling pathway. · Chinese herbal medicines
5.PMID: 12492516 (2002) — Contact sensitization from Compositae-containing herbal remedies and cosmetics.

Elecampane Inula

Sources & Citations

Calculate a safe dose of Elecampane Inula

Costmary

Alpinia calcarata

Illicium verum

Frequently asked questions

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Safety & adverse effects

Evidence summary

PubMed sources

Government sources

Elecampane Inula

Sources & Citations

Calculate a safe dose of Elecampane Inula

Related Herbs

Costmary

Alpinia calcarata

Illicium verum

Frequently asked questions

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Safety & adverse effects

Evidence summary

PubMed sources

Government sources