Dimethyloleuropein

PhytochemicalSecoiridoidBest with a meal

What is it

Dimethyloleuropein is a structural variant of oleuropein, the principal bitter compound in olive leaves and unripe olives. It is found in certain olive cultivars and may appear standardized in some olive leaf extracts.

Evidence for 2 uses

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

Blood pressure (general olive leaf extract)

Good Evidence

Olive leaf extracts (oleuropein-standardized) have shown modest reductions in blood pressure in RCTs of hypertensive adults. Dimethyloleuropein-specific evidence is limited.

Antioxidant / cardiovascular markers

Limited Evidence

Effects on inflammatory and oxidative markers reported.

How it works

Like oleuropein, dimethyloleuropein is a secoiridoid glycoside that on hydrolysis releases hydroxytyrosol-type metabolites. These compounds have demonstrated antioxidant, anti-inflammatory, antimicrobial, and modest blood-pressure-lowering effects in laboratory and small human studies. Specific evidence for dimethyloleuropein over oleuropein is limited.

Dosage

No standardized human dose specifically for dimethyloleuropein. Standardized olive leaf extracts (containing 10 to 25 percent oleuropein) are typically taken at 250 to 500 mg per day.

When and how to take it

Taken with meals to reduce stomach upset. Once or twice daily depending on product.

1 commercial form

Compare the main delivery options and what they’re best suited for.

Olive leaf extract (standardized)

Standardized extract used in cardiovascular and immune-support supplements.

Contains oleuropein and related compounds.

Safety

Olive leaf extract is generally well tolerated. Mild GI symptoms and headache are occasional. Allergic reactions are possible.

Who should be cautious

Use cautiously in people on blood pressure medication. Avoid in pregnancy and breastfeeding due to limited safety data on concentrated extracts. People with olive allergy should avoid.

Interactions

May modestly lower blood pressure; cumulative effect with antihypertensives possible. Theoretical interaction with antidiabetic medications. Possible mild antiplatelet effect.

Food sources

Olive leaves (decoction)

Amount
5 g dried
%DV
—

Frequently asked questions

Is dimethyloleuropein better than oleuropein?⌄

Specific comparative human evidence is limited. Both are precursors to hydroxytyrosol-type metabolites with similar proposed effects.

Will olive leaf extract really lower my blood pressure?⌄

Trials suggest modest reductions, particularly in mild hypertension. It should not replace prescribed therapy.

References

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

Research on Dimethyloleuropein (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.