Standardized Olive Leaf Extract by 21st Century — Ingredients, Evidence & Safety

Product Label

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Label Data

1 Vegetarian Capsule(s) Serving Size

30 Servings

Botanical Product Type

0% Evidence Coverage

Supplement Facts — Evidence Check

Olive Leaf Extract

500 mg

📊 Market median: 500.0mg (115 products)

Median 500.0mg This product: 500mg

Other Ingredients

Rice Bran Oat Fiber Vegetable Cellulose Magnesium Silicate Magnesium Stearate

Label Claims — Verification

❓ All Other

❓ Structure/Function

All Other (100% of products) Structure/Function (86% of products) Nutrient (7% of products) Approved Health (1% of products) Qualified Health (1% of products)

Target Groups

Vegetarian Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Directions: Take up to two (2) vegetarian capsules daily with meals for maximum daily results, or as directed by your healthcare provider.

⚠️ Warnings & Precautions

Keep out of reach of children.

Do not use if product appears to be tampered with or seal is broken.

🧪 Formulation Notes

No added Sugar, Salt, Yeast, Preservatives or Artificial Flavors.

100% Vegetarian Formula

Additional Information

The Natural Alternative for Improved Circulation and General Well Being*

Store at room temperature.

Unconditionally guaranteed for purity, freshness and label potency.

MADE IN USA

0505

HERBAL EXTRACT

21st Century's Extract (Olea europaea) standardized to 8% oleuropein is a valued nutritional discovery in support of the immune system.* For centuries the cultures of the Mediterranean have used olive daily in food preparations promoting good health and long life. 21st Century's standardized herbal extracts are thoroughly tested to assure specific levels of the important active ingredients are present for maximum benefit.

Product Details

UPC / SKU 7 40985 21716 0

DSLD Entry Date 2012-07-25

Product Type Botanical

Form Capsule

Brand 21st Century

DSLD ID 11492

Data Updated 2026-04-11

Research Evidence

5 Research Sources

47 Avg Quality Score

4 Clinical Trial

1 Rct

B Low Dose Monacolin K Combined with Coenzyme Q10, Grape Seed, and Olive Leaf Extracts Lowers LDL Cholesterol in Patients with Mild Dyslipidemia: A Multicenter, Randomized Controlled Trial

Rct Nutrients 2023

PubMed DOI

C Effect of a Supplement Containing Olive Leaf Extract and Vitamins on Performance of Male Elite Cyclists

Clinical Trial ClinicalTrials.gov 2025

ClinicalTrials.gov

C Olive Leaf Extract in Handball Players

Clinical Trial ClinicalTrials.gov 2025

ClinicalTrials.gov

C Effects of Enzymatic Digestion and Probiotic on Oleuropein Bioavailability

Clinical Trial ClinicalTrials.gov 2020

ClinicalTrials.gov

C Olive Leaf Extract as Part of a Healthy Lifestyle in the Reduction of Blood Pressure