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Head-to-head evidence comparison — which supplement is right for you?
Olive Leaf Extract wins 3 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
9 of 11 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
10 of 10 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (2)
Outcomes where both Olive Leaf Extract and Propolis have evidence — compare verdict strength side-by-side.
500-1000mg (standardized to 15-20% oleuropein)
With meals
Standardized extract (15-20% oleuropein)
300-1000mg daily (standardized extract)
With food, Divided doses for higher amounts, Throat spray can be used as needed
Standardized extract (capsules or tincture)
2-4 weeks
8 weeks
1-2 weeks
2-4 weeks
1-2 weeks
Acute
The impact of oleuropein, hydroxytyrosol, and tyrosol on cardiometabolic risk factors: a meta-analysis of randomized controlled trials
Critical reviews in food science and nutrition (2025) · Meta analysis · n=594
Fourteen human intervention studies with 594 participants were included.
Exploring the Benefits of Extra Virgin Olive Oil on Cardiovascular Health Enhancement and Disease Prevention: A Systematic Review
Nutrients (2025) · Systematic review
The beneficial effect was attributed to the polyphenols contained in EVOO.
Olive leaf extract effect on cardiometabolic risk factors: a systematic review and meta-analysis of randomized clinical trials
Nutrition reviews (2024) · Meta analysis · n=703
In the meta-analysis, fasting glycemia, as evaluated in studies using a low dose of OLE, showed a significant result favoring the control group.
Dosage exploration of the effects of honey and its derivatives on cardiometabolic outcomes: an overview of systematic reviews and GRADE-assessed updated meta-analysis
Nutrition & diabetes (2025) · Meta analysis · n=3544
Propolis demonstrated reductions in anthropometric measures and improvements in lipid profile, glycemic control, liver enzymes, and inflammation and oxidative stress markers.
The impact of propolis supplementation on inflammatory biomarkers: A meta-analysis and systematic review of randomized controlled clinical trials
Prostaglandins & other lipid mediators (2024) · Meta analysis · n=1139
The propolis supplementation significantly reduced IL-6 (WMD = -2.48; 95 % CI: -4.62, -0.34; P = 0.023) and TNF-α (WMD = -0.86; 95 % CI: -1.45, -0.26; P = 0.005) compared with control groups.
Potential Effects of Bioactive Compounds of Plant-Based Foods and Medicinal Plants in Chronic Kidney Disease and Dialysis: A Systematic Review
Nutrients (2024) · Systematic review
Systematic review examining Propolis efficacy
Based on RCT showing 6.4 mmHg SBP reduction, but one crossover trial showed no effect. Mixed results suggest conservative effectiveness estimates. Primarily studied in hypertensive populations.
Based on meta-analyses showing significant reductions in IL-6, TNF-α, and CRP. Effect sizes were modest with WMD of -2.48 for IL-6 and -0.86 for TNF-α. Conservative effectiveness reflects variable study quality and heterogeneity between trials.
AI-estimated from published studies. Interpret as directional guidance.
Olive Leaf Extract has a higher evidence score (7/10 vs 5.5/10) and wins in 3 of 3 categories.
Both Olive Leaf Extract and Propolis score equally (75) for support immune system.
No known interactions between Olive Leaf Extract and Propolis have been documented in our database. However, always consult a healthcare provider before combining supplements.