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Olive

What does the research say about Olive?

2 health outcomes synthesised

Research on olive leaf extract has been synthesized for 2 health outcomes. The strongest evidence is for improved quality of life, with moderate evidence strength based on 3 studies, where beneficial effects were small and typically observed at doses of 250–1000 mg/day over 8–12 weeks in populations including hypertensive adults and postmenopausal women.

Strongest evidence: The highest-quality evidence supports a small beneficial effect of olive leaf extract on Improved Quality of Life (moderate evidence strength). Across 3 randomized controlled trials, 2 reported small beneficial effects, while 1 found neutral effects. The effective dose range was 250–1000 mg/day, with effects typically seen at 8–12 weeks.

Mixed or weaker evidence: For Reduced Triglyceride Levels, all 3 studies (2 RCTs and 1 narrative review) reported beneficial effects, but the evidence strength is rated low due to a small evidence base and potential publication bias. Effect sizes were moderate, and doses ranged from 250 to 1000 mg/day.

Effective dose patterns: Both outcomes converge on a dose range of 250–1000 mg/day of olive leaf extract, with effects generally observed after 8–12 weeks of supplementation.

Population insights: Research was conducted in specific clinical populations—primarily hypertensive adults and postmenopausal women. Effects on quality of life also included a group with gastrointestinal discomfort, suggesting possible relevance for multiple conditions.

Notable caveats: The evidence base for both outcomes is small (only 3 studies each). For quality of life, one beneficial study combined olive leaf extract with other ingredients, complicating attribution. For triglycerides, the risk of publication bias is noted, and one study was a narrative review (lower-quality evidence).

Frequently asked

  • What is Olive good for according to research?
    Research suggests olive leaf extract may modestly improve quality of life, with moderate evidence from 3 studies (2 beneficial, 1 neutral). It may also help reduce triglyceride levels, though that evidence is weaker (low strength, all 3 studies beneficial but small sample).
  • What dose of Olive is typically used in studies?
    Both outcomes used doses ranging from 250 to 1000 mg/day of olive leaf extract. Effects on quality of life and triglycerides were generally observed after 8–12 weeks of supplementation.
  • Who benefits most from Olive?
    Studies primarily included hypertensive adults and postmenopausal women. One study on quality of life also included people with gastrointestinal discomfort, suggesting potential benefits for these specific clinical populations.
  • Are there caveats or limitations in the research on Olive?
    Yes. The evidence base for both outcomes is small (only 3 studies each). For quality of life, one study combined olive leaf extract with other ingredients, and another showed no benefit. For triglycerides, there is potential publication bias, and one study is a lower-quality narrative review.
  • Does Olive help with triglyceride levels?
    All 3 studies (2 RCTs and 1 review) reported beneficial effects on reducing triglycerides, but the evidence is rated low strength. Effects were moderate, and findings come from only hypertensive adults and postmenopausal women, so results are preliminary.
  • How strong is the evidence for Olive's effects on quality of life?
    The evidence is moderate strength, based on 3 RCTs. Two studies found small beneficial effects, while one found no benefit, suggesting the effect may be modest and population-specific.

Safety profile

4 studies reporting safety data

Across 4 clinical studies, no specific adverse events were quantitatively increased compared to control. Olive was described as well tolerated in multiple studies, with mild, transient irritation and erythema reported in one study. No serious adverse events were attributed to the intervention.

Caveats: Limited evidence base (4 studies); absence of reports does not establish safety. Most studies were not primarily designed for safety assessment, and rare adverse events may not have been detected.

Most-studied combinations with Olive

most supplement research is combination research
Also studied with:Aloe Vera (2), Pine (2)

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    By Comvita

    4.7 (69 reviews)
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    By Seagate

    4.5 (127 reviews)
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    4.9 (18 reviews)
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    By Sunergetic

    4.7 (47 reviews)
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    4.7 (6.1K reviews)
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  • Olive Leaf

    By Gaia Herbs

    4.8 (1.1K reviews)
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