# Omani (Inula helenium)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/omani
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-19
**Evidence Score:** 4 / 10
**Category:** European
**Also Known As:** Inula helenium, Elecampane, Horse-heal, Elf dock, Wild sunflower, Scabwort, Velvet dock, Marchalan

## Overview

Inula helenium (elecampane) contains alantolactone and isoalantolactone as primary bioactive sesquiterpene lactones that exhibit [anti-inflammatory](/ingredients/condition/inflammation) and [antimicrobial](/ingredients/condition/immune-support) properties. These compounds work by suppressing neutrophil activity and inhibiting bacterial cell wall synthesis in pathogenic organisms.

## Health Benefits

• [Anti-inflammatory](/ingredients/condition/inflammation) effects on respiratory conditions - in vitro studies show neutrophil suppression comparable to budesonide (Preliminary evidence)
• [Antimicrobial](/ingredients/condition/immune-support) activity against Staphylococcus aureus - root extracts demonstrate anti-staphylococcal properties in laboratory studies (Preliminary evidence)
• Potential anticancer properties - sesquiterpene lactones like isoalantolactone show antiproliferative effects in brain, pancreatic, and breast cancer cell lines (Preliminary evidence)
• [Digestive health](/ingredients/condition/gut-health) support - contains inulin, a prebiotic polysaccharide traditionally used for digestive issues (Traditional evidence)
• Respiratory expectorant - recognized by British Herbal Pharmacopoeia as antitussive and expectorant, traditionally used for excess mucus conditions (Traditional evidence)

## Mechanism of Action

Alantolactone and isoalantolactone, the primary sesquiterpene lactones in Inula helenium, inhibit neutrophil degranulation and reduce inflammatory mediator release in respiratory tissues. These compounds also disrupt bacterial peptidoglycan synthesis and interfere with Staphylococcus aureus cell membrane integrity. The [anti-inflammatory](/ingredients/condition/inflammation) effects occur through modulation of NF-κB signaling pathways and cyclooxygenase enzyme inhibition.

## Clinical Summary

Current evidence for Inula helenium is limited to preliminary in vitro studies demonstrating neutrophil suppression comparable to budesonide in laboratory models. Root extract studies show [antimicrobial](/ingredients/condition/immune-support) activity against Staphylococcus aureus with minimum inhibitory concentrations ranging from 125-250 μg/mL. No human clinical trials have been conducted to establish therapeutic efficacy or optimal dosing regimens. The evidence remains at the preclinical stage and requires human studies for validation.

## Nutritional Profile

{"macronutrients": {"fiber": "Approximately 5-10% by weight", "protein": "Low, less than 1% by weight"}, "micronutrients": {"vitamins": {"Vitamin C": "Trace amounts"}, "minerals": {"Potassium": "Moderate levels, around 200 mg per 100g", "Calcium": "Low levels, approximately 30 mg per 100g"}}, "bioactive_compounds": {"sesquiterpene lactones": {"isoalantolactone": "Present, specific concentration not well-documented"}, "inulin": "High concentration, approximately 40% by weight"}, "bioavailability_notes": "Inulin is a type of soluble fiber that may aid in digestion and has [prebiotic](/ingredients/condition/gut-health) effects. Sesquiterpene lactones may have limited bioavailability due to their complex structure."}

## Dosage & Preparation

Traditional dosages include: Decoction or dried root/rhizome 1.5-4g three times daily; Liquid extract (1:1 in 25% alcohol) 1.5-4mL three times daily; Tincture (1:5, 25%) 2-5mL three times daily; Powdered herb 2-4g daily; Cold infusion (1 tsp/cup steeped overnight) 1 cup three times daily. No clinically studied dosages available. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Inula helenium may cause allergic reactions in individuals sensitive to Asteraceae family plants, including contact dermatitis and respiratory irritation. The sesquiterpene lactones can potentially interact with anticoagulant medications by enhancing bleeding risk. Pregnant and breastfeeding women should avoid use due to lack of safety data and potential uterine stimulant effects. Large doses may cause gastrointestinal upset including nausea and digestive irritation.

## Scientific Research

No human clinical trials, randomized controlled trials (RCTs), or meta-analyses were identified in the available research. Current evidence is limited to in vitro studies, animal models, and traditional use documentation, with sesquiterpene lactones demonstrating [anti-inflammatory](/ingredients/condition/inflammation) and anticancer effects only in laboratory settings.

## Historical & Cultural Context

Used since ancient Roman and Greek times across Western, Ayurvedic, Traditional Chinese, and Irish ethnomedicine primarily for lung ailments including pneumonia, whooping cough, asthma, bronchitis, tuberculosis, and chronic coughs. Traditional applications also included digestive issues, use as a tonic, diaphoretic, diuretic, [antimicrobial](/ingredients/condition/immune-support), and surgical antiseptic.

## Synergistic Combinations

Marshmallow root, Mullein, Thyme, Licorice root, Ivy leaf

## Frequently Asked Questions

### What is the active compound in Inula helenium?

The primary active compounds are alantolactone and isoalantolactone, sesquiterpene lactones that provide the plant's anti-inflammatory and antimicrobial properties. These compounds are concentrated in the root portion of the plant.

### How does Inula helenium help with respiratory conditions?

Inula helenium suppresses neutrophil activity and reduces inflammatory mediator release in respiratory tissues through alantolactone compounds. In vitro studies show neutrophil suppression comparable to the corticosteroid budesonide.

### What bacteria does Inula helenium fight against?

Laboratory studies demonstrate Inula helenium root extracts have specific activity against Staphylococcus aureus with minimum inhibitory concentrations of 125-250 μg/mL. The antimicrobial effects work by disrupting bacterial cell wall synthesis.

### Is Inula helenium safe during pregnancy?

Inula helenium should be avoided during pregnancy and breastfeeding due to lack of safety data and potential uterine stimulant effects. The sesquiterpene lactones may pose unknown risks to fetal development.

### What is the recommended dosage of Inula helenium?

No standardized dosage has been established for Inula helenium as human clinical trials have not been conducted. Traditional preparations typically use 1-3 grams of dried root, but safety and efficacy at these doses remain unvalidated.

### Does Inula helenium interact with corticosteroid medications like budesonide?

While in vitro studies suggest Inula helenium's anti-inflammatory effects are comparable to budesonide, there is currently insufficient clinical evidence to establish whether concurrent use is safe or advisable. Individuals taking prescription corticosteroids should consult their healthcare provider before adding Inula helenium supplements, as the combined effects are not well-studied. Do not discontinue or replace prescribed corticosteroids with this supplement without medical guidance.

### Who should avoid Inula helenium supplementation?

Individuals with sesquiterpene lactone sensitivities or allergies to plants in the Asteraceae family (ragweed, chrysanthemums, dahlias) should avoid Inula helenium due to cross-reactivity risks. Those with active gastrointestinal ulcers should use caution, as the herb may stimulate digestive secretions. People taking anticoagulants or with bleeding disorders should consult a healthcare provider before use, as preliminary evidence suggests potential antiplatelet activity.

### What is the difference between Inula helenium root extract and whole plant preparations?

Root extracts of Inula helenium concentrate active compounds like isoalantolactone and alantolactone, which are primarily responsible for antimicrobial and anti-inflammatory properties demonstrated in laboratory studies. Whole plant preparations may contain less standardized levels of these bioactive sesquiterpene lactones and often have additional plant material that dilutes potency. Standardized root extracts typically provide more consistent dosing of active compounds compared to whole plant formulations.

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