Olive Leaf Extract
Also known as: Olea europaea leaf extract, oleuropein extract, olive leaf
Olive leaf extract is prepared from the leaves of Olea europaea and standardized to oleuropein, the bitter secoiridoid that also gives olive oil part of its character. It is used in cardiovascular, immune, and antioxidant formulas and is commonly paired with hawthorn or CoQ10 in heart-support blends. Systematic reviews and meta-analyses of randomized trials have examined its effects on blood pressure and other cardiometabolic markers, and several trials used 500 to 1,000 mg of extract daily.
Research summary
Oleuropein and hydroxytyrosol are studied for ACE-inhibiting activity, vasodilation, and antioxidant effects.
Dosage
Daily amounts, of extract.
| Lowest studied | Typical range | Highest studied | Upper limit |
|---|---|---|---|
| 500 mg | 500–1,000 mg | — | — |
500 to 1,000 mg of a 20% oleuropein extract daily, usually split with meals. Trials assessed blood-pressure markers after 6 to 8 weeks or longer.
Standardization: 20% oleuropein (6% and 40% grades also sold)
Source material: leaf extract
Format suitability
- Capsule
- Powder
- Tablet
- Softgel
- Gummy
- Liquid
Very bitter; capsules preferred. Liquid tinctures are common.
Formulation notes
Additive with other blood-pressure-active ingredients; note for formulation review.
Sources
- The effects of olive leaf extract on cardiovascular risk factors in the general adult population: a systematic review and meta-analysis of randomized controlled trials. (Razmpoosh E 2022)PubMed
- Olive leaf extract effect on cardiometabolic risk factors: a systematic review and meta-analysis of randomized clinical trials. (Álvares AA 2024)PubMed
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