Olive Leaf Liquid Extract ā Organic ā¢ 1 fl oz (30 mL) ā Herb Weight Equivalence 500 mg per 1 mL (1:2) ā Immune & Cardiometabolic Support*
LifeSource Vitamins Olive Leaf Liquid Extract provides an organic, 1:2 herb strength tincture delivering a label-verified herb weight equivalence of 500 mg per 1 mL serving. Olive leaf polyphenols (including oleuropein) support healthy immune defenses, vascular wellness, and antioxidant protection. Produced in FDA-registered, GMP-certified facilities and third-party tested for identity, purity & potency.*
Research-Driven & Verified Product.
Explore the clinical research, ingredient science, and global evidence supporting this product below.
Research Promise:
At LifeSource Vitamins, our commitment is rooted in research and results. Every benefit below is based on human studies verified by the National Institutes of Health (NIH), a world-leading health authority, plus insights from 39 clinically respected organizations and 20 globally renowned health-focused universities.*
Clinically Studied Benefits
ā Supports healthy blood pressure* ā Olive leaf extract lowered systolic/diastolic measures in adults with stage-1 hypertension.
NIH/PubMed ā Susalit E, 2011
ā Improves vascular health & lipids* ā Phenolic-rich OLE improved blood pressure and lipid profile in adults.
NIH/PubMed ā Lockyer S, 2016
ā Promotes insulin sensitivity* ā 12-week RCT improved insulin sensitivity and Ī²-cell function in overweight men.
NIH/PubMed ā de Bock M, 2013
ā Shortens sick-day duration (URIs)* ā Season-long OLE reduced illness duration in athletes.
NIH/PubMed ā Somerville V, 2019
ā Cardiometabolic support (pooled)* ā Meta-analyses confirm supportive roles across BP and lipid outcomes.
NIH/PMC ā Razmpoosh E, 2022
ā Antioxidant support* ā Olive polyphenols improved markers of oxidative stress in human-relevant research.
NIH/PMC ā Saibandith B, 2017
ā Cardiometabolic overview* ā Controlled human evidence indicates favorable directions for BP/lipids with standardized extracts.
NIH/PMC ā Lockyer S, 2016
ā Wellness in active adults* ā As above, reduced sick-day duration across training blocks.
NIH/PMC ā Somerville V, 2019
ā Glucose-insulin dynamics (replication)* ā Direction of effect for insulin sensitivity with OLE.
NIH/PMC ā de Bock M, 2013
Additional / Promising Evidence
ā Lipid outcomes (context)* ā 8-week trial in overweight/obese adults reported mixed lipid effects (emphasizes standardized dosing/duration).
NIH/PMC ā Stevens Y, 2020
ā Metabolic syndrome overview* ā Human and mechanistic evidence summarized for olive polyphenols.
NIH/PMC ā Saibandith B, 2017
ā BP & lipid meta-analyses* ā Pooled data support favorable BP/lipid directions with OLE.
NIH/PMC ā Razmpoosh E, 2022
NIH/PMC ā Ismail MA, 2021
University-Led & Academic Studies
(No distinctly university-led studies provided in input that meet the strict affiliation criteria; section preserved as empty per preservation rules.)
Global Evidence & Reviews
ā Authoritative monographs & reviews ā Public evidence summaries from WHO, NCCIH, EFSA/EMA, USP/NSF, ABC and similar authorities support safe, evidence-based use of olive leaf in cardiometabolic and immune wellness.*
We monitor research from leading institutions ā
Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge, Oxford, Stanford, Yale, Tufts, University of Florida, Oregon State University ā Linus Pauling Institute, Columbia, Cornell, Ohio State ā to align with credible science.*
Key Ingredients
- Organic Olive Leaf (Olea europaea) tincture, Herb Strength Ratio 1:2 (herb weight equivalence 500 mg per 1 mL)
- Other Ingredients: Grain alcohol (45ā55% by volume), deionized water
Brief Benefit Bullets
- Supports healthy immune defenses*
- Helps maintain healthy blood pressure already in the normal range*
- Promotes antioxidant protection for cellular health*
- Organic tincture; made in FDA-registered, GMP-certified facilities*
- Allergy note: contains no soy, dairy, or gluten*
- 3rd-party lab tested for identity, potency & purity
Suggested Use
Take 1 mL (approximately 30 drops) daily in water or juice, or as directed by your healthcare professional. Shake well before use. If pregnant, nursing, taking medications, or have a medical condition, consult your physician.*
Product Specifications
ā¢ Serving Size ā 1 mL (30 drops)
ā¢ Servings Per Container ā 30
ā¢ Key Active Per Serving ā Organic Olive Leaf (Olea europaea) tincture, Herb Strength Ratio 1:2 (herb weight equivalence 500 mg per 1 mL)
ā¢ Form ā Liquid tincture (alcohol extract)
ā¢ Other Ingredients ā Grain alcohol (45ā55% by volume), deionized water
ā¢ Free From ā Non-GMO, gluten-free; no artificial colors, preservatives or synthetic chemicals*
ā¢ Quality ā Third-party tested for identity, potency & purity
LifeSource Vitamins ā Proudly American ā Since 1992
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Olive Leaf Liquid Extract (Organic) ā supports immune defenses, vascular wellness, and antioxidant protection; third-party tested quality. Clinically Studied Ingredients ā NIH/PubMed!*
