Erythrodiol

PhytochemicalTriterpeneBest with a meal

What is it

Erythrodiol is a pentacyclic triterpene alcohol found in olive oil, olive leaf, and a few other plants. It is one of the minor 'non-glyceride' constituents of virgin olive oil and contributes to olive's bioactive profile.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Anti-inflammatory effects (research stage)

Mixed Evidence

Laboratory studies show anti-inflammatory and antioxidant effects. Direct human clinical trials of isolated erythrodiol are essentially absent; benefits are inferred from whole olive product research.

How it works

Erythrodiol has anti-inflammatory and vasodilatory effects in laboratory studies and modulates cell signaling pathways related to inflammation. It is closely related to oleanolic acid and shares some structural and functional properties. Most research has examined erythrodiol as part of whole olive oil or olive leaf extracts rather than as an isolated supplement.

Dosage

There is no established dose for isolated erythrodiol. Whole olive oil consumption typically provides only milligrams of erythrodiol per day at most.

When and how to take it

Olive oil and its components are typically consumed with meals.

1 commercial form

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Erythrodiol in olive products

Naturally present in virgin olive oil and olive leaf.

Absorbed with fat

Safety

As a component of widely consumed olive oil, erythrodiol has a long history of safe dietary exposure. Concentrated extract safety is not well characterized.

Who should be cautious

Generally considered safe at dietary intake levels. Concentrated extracts: limited safety data.

Interactions

No significant interactions reported.

Food sources

Extra virgin olive oil

Amount
1 tbsp
%DV
—

Frequently asked questions

Should I take erythrodiol as a supplement?⌄

Standalone supplements are rare and not well-studied. Whole olive products provide erythrodiol along with other beneficial compounds.

Is erythrodiol the same as oleanolic acid?⌄

They are closely related triterpenoids with similar but not identical properties.

References

Erythrodiol on Wikidata — Wikidata link

Erythrodiol on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Erythrodiol (PubMed search) — PubMed link

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.