Olive Leaf Extract
Also known as: olea europaea, oleuropein, olive leaf
Recommended Dosage
500–1000 mg
Extract from olive tree leaves rich in oleuropein with evidence for blood pressure reduction, antimicrobial activity, and antioxidant effects. Aligns with Mediterranean diet research. May lower blood pressure comparably to some medications. Monitor if on BP meds.
Quick Facts
Evidence
Grade C
Studies
1
Interactions
2
Forms
1
Evidence Rating: Grade C — Preliminary
Limited human trials, mostly animal or in-vitro data. Promising but not yet proven in robust human studies.
Interaction Warnings
Additive hypotensive effects — may cause blood pressure to drop too low.
May lower blood sugar mildly — monitor glucose.
Important Notes
- Active compound oleuropein has antioxidant, anti-inflammatory, and antimicrobial properties
- May cause Herxheimer-like reactions (die-off symptoms) when starting
- Standardization to oleuropein content is important for consistent dosing
- Part of the Mediterranean diet health halo — extract concentrates beneficial compounds
Clinical Evidence (1 study)
Olive leaf extract and its main component oleuropein on blood pressure: a systematic review and meta-analysis
Lockyer S et al. (2017) — Eur J Nutr
Olive leaf extract significantly reduced systolic and diastolic blood pressure, with effects comparable to captopril in one trial
View on PubMedAlternatives to Consider
These supplements target similar goals and may be worth considering alongside or instead of Olive Leaf Extract.
Beta-Glucan
Grade BDual-purpose supplement: yeast-derived for immune support (250mg), oat-derived for cholesterol (3g). Both well-supported by RCTs.
Black Seed Oil
Grade BWidely studied traditional remedy with strong anti-inflammatory properties from thymoquinone. Evidence for metabolic health, immune modulation, and gut health. Oil form preferred for absorption.
Spirulina
Grade BNutrient-dense cyanobacterium with strong evidence for immune support, lipid improvement, and antioxidant protection. Complete protein source. Quality sourcing is critical to avoid contamination.
Related Supplements
Beta-Glucan
Grade B — Moderate EvidenceDual-purpose supplement: yeast-derived for immune support (250mg), oat-derived for cholesterol (3g). Both well-supported by RCTs.
Black Seed Oil
Grade B — Moderate EvidenceWidely studied traditional remedy with strong anti-inflammatory properties from thymoquinone. Evidence for metabolic health, immune modulation, and gut health. Oil form preferred for absorption.
Spirulina
Grade B — Moderate EvidenceNutrient-dense cyanobacterium with strong evidence for immune support, lipid improvement, and antioxidant protection. Complete protein source. Quality sourcing is critical to avoid contamination.
Garlic / Allicin
Grade A — Strong EvidenceStrong RCT evidence for blood pressure reduction (~8-9/5-6 mmHg) and cold prevention (64% reduction). Aged extract preferred for CV.
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⚕️ Important Disclaimer
This information is for educational purposes only. It is not medical advice. Always consult a healthcare provider before starting any supplement regimen, especially if you take medications or have health conditions.
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