PlainPill

Olive Leaf Extract

Based on 12 first-hand reports and 7 meta-analyses & systematic reviews in the medical literature. Ranked #953 of 1,974 overall.

15
User score
Mixed
8% positive8% mixed0% negative83% unclear

Of reports that state an outcome, 50% are positive.

Clinical research
AStrong research base
7
meta-analyses
25
RCTs
482
papers

What Olive Leaf Extract does, according to users

Of the people who reported each effect, the share who said it got better.

No specific effects reported yet.
betterno changeworse

What the research says

Systematic reviews and meta-analyses from PubMed, with their published conclusions.

AStrong research base

3+ meta-analyses or systematic reviews and 10+ randomized controlled trials in humans. The grade measures how much human research exists — read the conclusions below for what it found.

Clin Nutr ESPEN · 2022 · Meta-analysis / systematic review
What is the efficacy of dietary, nutraceutical, and probiotic interventions for the management of gastroesophageal reflux disease symptoms? A systematic literature review and meta-analysis

Conclusion: Evidence to guide the dietary management of GERD symptoms is limited in scope, quality, and feasibility. Based on the limited evidence available, dietary GERD management should be long-term, individualized, and consider both dietary restrictions and/or additions.

PubMed 36513474 ↗
Front Pharmacol · 2022 · Meta-analysis / systematic review
Olive Leaves as a Potential Phytotherapy in the Treatment of COVID-19 Disease; A Mini-Review

Conclusion: In addition, olive leaf extract was previously reported in several in vivo studies for its anti-inflammatory, analgesic, antipyretic, immunomodulatory, and antithrombotic activities which are of great benefit in the control of associated inflammatory cytokine storm and disseminated intravascular coagulation in COVID-19 patients. In conclusion, the described biological activities of olive leaves alongside their biosafety, availability, and low price make them a potential candidate drug or supplement to control COVID-19 infection and are recommended for clinical investigation.

PubMed 35496299 ↗

Dosage people report

As stated by users — not a recommendation. Follow the label or your doctor.

680 mg2x daily
250 mgdaily

Reported side effects

How often each side effect came up across all reports.

No side effects reported so far.

What users say

Verbatim quotes, shortened only — each links to the original discussion.

“Nmn, resveratrol and olive leaf is good stuff”
Source discussion ↗
“It has to be paired with SIRT activators like Resveratrol and Olive leaf extract”
Source discussion ↗
“use a natural antibiotic like Olive Leaf Extract or mastic gum to decrease the bacterial load”
Source discussion ↗
“Drop the olive leaf altogether.”
Source discussion ↗
“whatd you notice from ksm 66. what effects. you tried olive leaf extract”
Source discussion ↗
Top discussions (5)

More supplements

User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate