Olive Leaf Extract
13 benefits mapped to clinical evidence across supplements.
Dose per serving from products
683 products in our catalogue print how much Olive Leaf Extract a serving holds.
Most common: 100 mg to 250 mg, 22% of 683 products.
| Dose per serving | Products |
|---|---|
| 10 mg or less | 34 |
| 10 mg to 25 mg | 65 |
| 25 mg to 50 mg | 77 |
| 50 mg to 100 mg | 145 |
| 100 mg to 250 mg | 153 |
| 250 mg to 500 mg | 144 |
| 500 mg to 1 g | 60 |
| over 1 g | 5 |
Dose per serving from research
7 study groups in 6 studies say how much Olive Leaf Extract participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 500 mg to 1 g, 43% of 7 study groups.
| Daily dose | Study groups |
|---|---|
| 100 mg to 250 mg | 2 |
| 250 mg to 500 mg | 1 |
| 500 mg to 1 g | 3 |
| 1 g to 2.5 g | 0 |
| 2.5 g to 5 g | 0 |
| 5 g to 10 g | 0 |
| 10 g to 25 g | 1 |
Benefit Evidence
Research sources
Inflammation (4)
- Effects of Olive Leaf Extract on Metabolic Response, Liver and Kidney Functions and Inflammatory Biomarkers in Hypertensive Patients
PubMed ID: 31930845
Randomized trial in hypertensive patients showed significant decreases in ILâ6, ILâ8 and TNFâα over 12 weeksâstrong antiâinflammatory evidence.
- Impact of phenolic-rich olive leaf extract on blood pressure, plasma lipids and inflammatory markers: a randomised controlled trial
PubMed ID: 26951205
Reduced plasma ILâ8 and modest improvements in BP and lipids in preâhypertensive men support inflammation modulation.
- Efficacy of olive leaves extract on the outcomes of hospitalized covid-19 patients: A randomized, triple-blinded clinical trial
PubMed ID: 36319585
OLE reduced CRP/ESR in hospitalized COVID patients alongside clinical improvementârobust antiâinflammatory signal.
- Efficacy of olive leaf extracts in controlling blood pressure in hypertensive patients: a double-blind randomized clinical trial
PubMed ID: 40990594
Large trial showed improvements in inflammatory markers (CRP) along with BP and metabolic benefitsâconsistent antiâinflammatory activity.
Blood circulation (2)
- Efficacy of olive leaf extracts in controlling blood pressure in hypertensive patients: a double-blind randomized clinical trial
PubMed ID: 40990594
Large RCT reduced 24âh SBP, BP load and diastolic BP variabilityâstrong evidence of improved vascular/circulatory function.
- Impact of phenolic-rich olive leaf extract on blood pressure, plasma lipids and inflammatory markers: a randomised controlled trial
PubMed ID: 26951205
Preâhypertensive crossover trial modestly lowered ambulatory BP and LDLâsupports circulation/vascular benefit.
Blood pressure (2)
- Efficacy of olive leaf extracts in controlling blood pressure in hypertensive patients: a double-blind randomized clinical trial
PubMed ID: 40990594
Large multicenter RCT showed clinically meaningful 24âh SBP reduction (~6.4 mmHg), lower BP load and BP variabilityâstrong evidence.
- Impact of phenolic-rich olive leaf extract on blood pressure, plasma lipids and inflammatory markers: a randomised controlled trial
PubMed ID: 26951205
Preâhypertensive men had modest ambulatory BP reductions over 6 weeksâsupportive of BPâlowering effect.
Cholesterol (2)
- Impact of phenolic-rich olive leaf extract on blood pressure, plasma lipids and inflammatory markers: a randomised controlled trial
PubMed ID: 26951205
Modest reductions in total cholesterol and LDL in preâhypertensive men after 6 weeksâsupports cholesterolâlowering potential.
- Efficacy of olive leaf extracts in controlling blood pressure in hypertensive patients: a double-blind randomized clinical trial
PubMed ID: 40990594
Large RCT reported improvements in metabolic markers including triglycerides and some lipid measuresâsupports lipid benefit.
Heart health (2)
- Efficacy of olive leaf extracts in controlling blood pressure in hypertensive patients: a double-blind randomized clinical trial
PubMed ID: 40990594
Large RCT showed meaningful 24âh SBP reduction, lower BP load/variability and improvements in metabolic/inflammatory markersâstrong CV support.
- Impact of phenolic-rich olive leaf extract on blood pressure, plasma lipids and inflammatory markers: a randomised controlled trial
PubMed ID: 26951205
Preâhypertensive men had modest BP and LDL reductions and lower ILâ8âfavourable cardiovascular profile.
Blood sugar (2)
- Olive (Olea europaea L.) leaf polyphenols improve insulin sensitivity in middle-aged overweight men: a randomized, placebo-controlled, crossover trial
PubMed ID: 23516412
12âweek RCT in overweight men showed improved insulin sensitivity, lower postâmeal glucose AUC and insulin AUCâstrong glucoseâmetabolic benefit.
- Efficacy of olive leaf extracts in controlling blood pressure in hypertensive patients: a double-blind randomized clinical trial
PubMed ID: 40990594
Large hypertensive trial reported improvements in glucose and metabolic markers along with BPâsupports systemic glycaemic benefit.
Wellbeing (2)
- Efficacy of olive leaves extract on the outcomes of hospitalized covid-19 patients: A randomized, triple-blinded clinical trial
PubMed ID: 36319585
Improved clinical outcomes, inflammatory markers and shorter hospitalization in COVID patients indicate broad wellness benefit.
- Olive Leaf Extract Supplementation Improves Postmenopausal Symptoms: A Randomized, Double-Blind, Placebo-Controlled Parallel Study on Postmenopausal Women
PubMed ID: 39599665
Better menopausal QoL and some metabolic/bone signals suggest an overall wellness effect in that population.
Immune support (2)
- Effects of Olive Leaf Extract on Metabolic Response, Liver and Kidney Functions and Inflammatory Biomarkers in Hypertensive Patients
PubMed ID: 31930845
Reduced proâinflammatory cytokines (ILâ6, ILâ8, TNFâα) in hypertensive patients, implying immuneâmodulatory effects.
- Efficacy of olive leaves extract on the outcomes of hospitalized covid-19 patients: A randomized, triple-blinded clinical trial
PubMed ID: 36319585
Large RCT in COVID patients showed faster recovery, higher O2 sat and lower CRP/ESRâsupports immune/host-response benefit.
Antimicrobial (2)
- The efficacy of olive leaf extract on healing herpes simplex virus labialis: A randomized double-blind study
PubMed ID: 33541815
Topical OLE outperformed 5% acyclovir for HSVâ1 lesion healingâevidence of antiviral/antimicrobial topical activity.
- Evaluating the effectiveness of topical olive leaf extract emulgel in managing recurrent herpes labialis: a randomized controlled clinical study
PubMed ID: 39623211
Topical OLE shortened healing time of herpes labialis vs acyclovirâsupports antiviral topical activity.
Oral health (2)
- Evaluating the effectiveness of topical olive leaf extract emulgel in managing recurrent herpes labialis: a randomized controlled clinical study
PubMed ID: 39623211
Emulgel OLE accelerated herpes labialis healing vs acyclovirâsupports oral/mucosal benefit.
- The efficacy of olive leaf extract on healing herpes simplex virus labialis: A randomized double-blind study
PubMed ID: 33541815
Topical OLE shortened HSVâ1 lesion healing and reduced symptoms on the lip (oral mucosa) compared with acyclovir.
Skin health (2)
- The efficacy of olive leaf extract on healing herpes simplex virus labialis: A randomized double-blind study
PubMed ID: 33541815
Topical 2% OLE healed HSVâ1 lesions faster and reduced pain/itching vs 5% acyclovirâclear topical/skin benefit.
- Evaluating the effectiveness of topical olive leaf extract emulgel in managing recurrent herpes labialis: a randomized controlled clinical study
PubMed ID: 39623211
Topical OLE emulgel shortened recurrent herpes labialis healing time vs acyclovir (~0.8 day faster)âpositive skin/mucosal outcome.
Respiratory comfort (1)
- Efficacy of olive leaves extract on the outcomes of hospitalized covid-19 patients: A randomized, triple-blinded clinical trial
PubMed ID: 36319585
In hospitalized COVID patients OLE increased oxygen saturation and shortened hospitalizationâsupports respiratory/clinical benefit.
Joint comfort (1)
- Impact of olive leaf extract on pain management and functional improvement in elderly patients with knee osteoarthritis: A randomized controlled trial
PubMed ID: 39955806
RCT in elderly knee OA patients showed reduced pain and improved function with oral and/or topical OLE.
Similar by evidence
Supplements the same benefits carry qualifying findings for â a fact about the evidence graph, not a recommendation to swap.
Products with Olive Leaf Extract
Search all1440 products whose verified label declares Olive Leaf Extract â not every bottle that mentions it in a title.
Being studied right now
Recruiting clinical trials registered on ClinicalTrials.gov. A trial in progress has no result yet â this is what the field is asking, not what it found.