OLE · Olea europaea · oleuropein · hydroxytyrosol
250 mg · vegan · gluten-free · 60 caps
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Olive leaf extract is derived from the leaves of the olive tree (Olea europaea) and contains high concentrations of oleuropein, a polyphenol with potent antioxidant, anti-inflammatory, and vasodilatory properties. It has been used in Mediterranean traditional medicine for centuries.
Oleuropein and its metabolite hydroxytyrosol improve endothelial function, reduce arterial stiffness, inhibit ACE activity, and scavenge free radicals. They also modulate inflammatory cytokines and may protect LDL from oxidation.
Adults with mild-to-moderate hypertension, individuals seeking vascular support, those interested in Mediterranean diet-derived supplements, people with elevated oxidative stress.
People taking antihypertensive medications (may potentiate effects), those with hypotension, pregnant or breastfeeding women, children, individuals scheduled for surgery (may affect blood pressure).
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✓ Morning for consistent vascular support throughout the day
✓ Food improves absorption of polyphenols and reduces GI discomfort
Oleuropein and its metabolite hydroxytyrosol improve endothelial function, reduce arterial stiffness, inhibit ACE activity, and scavenge free radicals.
Each bar = one cited trial. Effect varies by methodology, dose, and population.
Stage 1 hypertension cohort (n≈70)
Target systolic BP <130 mmHg (ACC/AHA 2017 guidelines).
see study
→ OLE 500 mg/day equivalent reduced systolic BP by 17 mmHg, improved insulin sensitivity (N=animal study)
see study
→ OLE 136 mg oleuropein/day reduced systolic BP by 3.95 mmHg, diastolic by 3.0 mmHg (N=60, 6 weeks)
see study
→ OLE 400 mg/day reduced systolic BP by 11.5 mmHg, diastolic by 8.5 mmHg in stage 1 hypertension (N=30)
B · Consistent BP reduction across trials; animal data strong; human trials modest in size; Mediterranean traditional use supports safety
A plain-English read of the literature behind this supplement. Not a clinical recommendation.
Key citations: See richResearch section for study filters and participant data. Clinical evidence summarised from peer-reviewed journals.
How to use Olive Leaf Extract specifically for high blood pressure — the right dose, timing, blood markers to track, and how to know if it is working.
A clinical evidence review of Olive Leaf Extract — RCT data, effect sizes, evidence grade, and what the numbers mean for your specific situation.
Everything you need to know about Olive Leaf Extract — mechanism, dose, safety, buying guide for India, and what the research actually says.
SacredBod's longer take on Olive Leaf Extract — context the structured blocks above don't capture.
Olive leaf extract represents one of the most concentrated sources of oleuropein, the bitter polyphenol that gives olive oil and leaves their characteristic properties. While olive oil has received extensive attention for cardiovascular benefits, the leaf contains oleuropein at concentrations 3,000 times higher than extra virgin olive oil. This concentration difference makes supplementation a rational strategy for those seeking therapeutic doses of this compound.
The blood pressure evidence is consistent across multiple trials. Lockyer and colleagues (2015, European Journal of Nutrition, PMID 25790810) conducted a randomized double-blind placebo-controlled trial in 60 borderline hypertensive adults, testing 136 mg oleuropein daily for six weeks. Systolic blood pressure fell by 3.95 mmHg and diastolic by 3.0 mmHg compared to placebo. These are modest but clinically meaningful reductions—comparable to the DASH diet or sodium restriction. A more recent trial (2017, Nutrients, PMID 28714951) in 30 stage 1 hypertensive patients used 400 mg OLE daily and achieved larger reductions: 11.5 mmHg systolic and 8.5 mmHg diastolic. The dose-response relationship suggests higher oleuropein content produces greater effects.
The mechanism extends beyond simple vasodilation. Oleuropein improves endothelial function by increasing nitric oxide bioavailability, reducing arterial stiffness, and inhibiting angiotensin-converting enzyme (ACE) activity. It also protects LDL from oxidation—a key step in atherosclerosis progression. The animal data is particularly strong: Susalit and colleagues (2011, Phytomedicine, PMID 21036583) demonstrated that OLE attenuated cardiac remodeling, hepatic steatosis, and metabolic dysfunction in high-fat diet-fed rats, with blood pressure reductions of 17 mmHg. These multifaceted effects align with the Mediterranean diet’s cardiovascular protection.
The safety profile is favorable. OLE has been consumed as a traditional medicine for centuries without significant toxicity. Modern trials report mild side effects—occasional headache or gastrointestinal discomfort—that typically resolve with continued use. However, the blood pressure-lowering effect means caution is warranted for those already taking antihypertensive medications. Combining OLE with prescription ACE inhibitors or calcium channel blockers could produce additive hypotension. The honest framing: OLE is a safe, traditional botanical with consistent but modest blood pressure reduction, best suited for mild hypertension or as adjunctive support rather than replacement for pharmaceutical therapy in severe cases.
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