Supplement analysis backed by scientific evidence · PT

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Limited evidenceImmunity

Elecampane

Elecampane root has no randomized human trials for anything. Its signature compound alantolactone is genuinely bioactive — it is also a potent contact allergen and a general cytotoxin, which makes the 'natural anticancer herb' marketing exactly backwards.

What the science says

  • Expectorant for bronchitis and chronic cough Limited evidence

    Elecampane's traditional reputation as a lung herb rests on centuries of use and on the irritant expectorant behaviour of its sesquiterpene lactones, not on any clinical trial. No controlled study has measured cough frequency, sputum, or lung function with elecampane in humans. European herbal registration for it is traditional-use only where it exists at all.

  • Anticancer activity from alantolactone Limited evidence

    Alantolactone and isoalantolactone kill cancer cell lines at low micromolar concentrations by depleting glutathione, generating reactive oxygen species, and triggering apoptosis via NF-kB and STAT3 inhibition. The same chemistry is non-selective enough to damage normal cells, and there is no human trial, no pharmacokinetic data on oral dosing, and no established safe systemic dose. Anyone selling elecampane as a cancer treatment is extrapolating from a petri dish.

  • Antiparasitic ('worm' remedy) Limited evidence

    Elecampane's old name is 'elfdock' and it was used as an anthelmintic; alantolactone does show activity against helminths and protozoa in vitro. There is no modern human efficacy or dosing data, and effective, safe prescription antiparasitics exist.

  • Prebiotic effect from inulin Limited evidence

    Elecampane root is where inulin was first isolated and can be up to 40% inulin by dry weight, so a large dose supplies real fermentable fiber. But you would obtain the same inulin from chicory root at a fraction of the cost and without the sesquiterpene lactones — see the inulin entry rather than dosing elecampane for gut health.

Dosage & safety

Studied doseTraditional doses: 1.5-4 g dried root as a decoction up to three times daily, or 1-2 mL of 1:5 tincture three times daily. Capsules typically supply 300-500 mg root powder. None of these are validated by trials, and no standardized alantolactone dose for humans has been established.
SafetyThe main documented harm is allergy: alantolactone is a classic strong sesquiterpene-lactone sensitizer and is used as a screening allergen in patch-test panels, with broad cross-reactivity among Asteraceae-allergic patients (ragweed, chamomile, feverfew, arnica, chrysanthemum). Handling the root can cause allergic contact dermatitis. Large oral doses cause vomiting, diarrhoea, cramping, and — in animal reports — paralysis at high exposure. Avoid in pregnancy and lactation, in anyone with Asteraceae allergy, and alongside sedatives or antidiabetic drugs given theoretical additive effects. Not a doping concern; not approved as a drug in the US or EU.

Scientific references

Where to buy

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