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HEART & CIRCULATION

Olive Leaf Extract (Oleuropein)

Heart · immune · blood pressure

MODERATE EVIDENCEVEGANREAD THE RESEARCH
Written to our editorial standards · reviewed against published research· Updated 5 Jun 2026
Last reviewed: May 30, 2026
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Olive Leaf Extract: Heart · immune · blood pressure. Oleuropein supports healthy blood pressure and vascular function and adds antioxidant and immune activity. Standard dose 500 mg (18% oleuropein), taken in the morning, about $13/month. Evidence rating: moderate evidence.

Where to buy

NOWFOODSOlive Leaf Extract120 VEG CAPSDIETARY SUPP.
RECOMMENDED
NOW Foods, Olive Leaf Extract
500 mg (18% oleuropein) · Morning · ~$13/month

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All product options

NOWFOODSOlive Leaf Extract120 VEG CAPSDIETARY SUPP.BESTSELLER
Olive Leaf Extract
NOW Foods
120 veg caps · $13 · ★ 4.7
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SOLGAROlive Leaf Extract60 VEG CAPSDIETARY SUPP.PREMIUM
Olive Leaf Extract
Solgar
60 veg caps · $16 · ★ 4.7
Buy on iHerb →Buy on Amazon →
GAIAHERBSOlive Leaf60 CAPSULESDIETARY SUPP.PREMIUM
Olive Leaf
Gaia Herbs
60 capsules · $22 · ★ 4.7
Buy on iHerb →Buy on Amazon →
NATURE'SWAYOlive Leaf 20% Oleurop…60 VEG CAPSDIETARY SUPP.BEST VALUE
Olive Leaf 20% Oleuropein
Nature's Way
60 veg caps · $12 · ★ 4.6
Buy on iHerb →Buy on Amazon →

What is Olive Leaf Extract?

Olive leaf extract concentrates oleuropein, the same polyphenol family that makes extra-virgin olive oil heart-protective. Controlled trials show standardized olive leaf extract can modestly lower blood pressure and improve markers of vascular function and cholesterol, while laboratory work points to the antioxidant and antimicrobial activity behind its traditional use for immune support. Effects are gentle and build over weeks, so it suits long-term cardiovascular maintenance rather than acute use. Choose an extract standardized to 16 to 20 percent oleuropein, typically 500 to 1000 mg daily with food.

WHY IT MATTERS

Oleuropein supports healthy blood pressure and vascular function and adds antioxidant and immune activity.

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Common questions

What is Olive Leaf Extract?
Olive leaf extract concentrates oleuropein, the same polyphenol family that makes extra-virgin olive oil heart-protective. Controlled trials show standardized olive leaf extract can modestly lower blood pressure and improve markers of vascular function and cholesterol, while laboratory work points to the antioxidant and antimicrobial activity behind its traditional use for immune support. Effects are gentle and build over weeks, so it suits long-term cardiovascular maintenance rather than acute use. Choose an extract standardized to 16 to 20 percent oleuropein, typically 500 to 1000 mg daily with food.
What is Olive Leaf Extract used for?
Heart · immune · blood pressure. Oleuropein supports healthy blood pressure and vascular function and adds antioxidant and immune activity.
What is the standard dose of Olive Leaf Extract?
500 mg (18% oleuropein), typically taken in the morning. Approximate cost is $13 per month.
How strong is the evidence for Olive Leaf Extract?
Moderate evidence for its primary uses. See the full study list on the research page.

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