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Evidence-Based Supplement Research
Evidence-Based Supplement Research
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Olive and Reduced Triglyceride Levels

Research synthesisLow evidenceModerate effect3 studies · 3 beneficial · 0 neutral · 0 harmful

Across all 3 studies available, olive leaf extract (OLE) shows beneficial effects on reducing triglyceride levels, with 2 of 3 studies reporting statistically significant findings and effect sizes ranging from small to moderate. The median study duration was 84 days (12 weeks), suggesting effects typically observed after several weeks of supplementation. The most studied population includes adults with elevated cardiovascular risk or postmenopausal women, with doses ranging from 250 mg/day to 1000 mg/day.

  • Effective dose range: 250-1000 mg/day
  • Studied populations: adults with mildly to moderately elevated blood pressure, postmenopausal women aged 47-70 years

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. Available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed). One study was a narrative review with no statistical significance data, and one study had a small effect size, indicating the overall benefit may be modest.

Generated Jun 11, 2026
Doses used in studies
  • mg/day: 250–1,000 (median 625, IQR 437.5–812.5) — 2 studies
Time to effect
Median: 2.8 months · IQR 2.8 months–2.8 months · Range 2.8 months–2.8 months — Reported in 2 of 3 studies
Safety in these studies
3 of 3 papers
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