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Swanson Superior Herbs

Olive Leaf Extract - Standardized

Item | SWH238

Please note: Some packaging may vary while our labels get a new look.
  • High-powered antioxidant defense against free radicals

  • The most powerful antioxidant known to modern nutritional science

  • Features Olea25® standardized to 25% hydroxytyrosol

Serving Information

  • Serving Size: 1 capsule
  • 100 mg Per Serving
  • 60 Servings Per Container
  • Veg Caps Size: 1
30% OFF
100 mg 60 Veg Caps

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Supplement Facts

Serving Size 1 Veggie Capsule

Supplement Facts
Amount Per Serving   % Daily Value
Olea25™ Hydroxytyrosol Olive Leaf Extract (Olea europaea) (standardized to 25% hydroxytyrosol) 100 mg *

*Daily Value not established.

Other ingredients: Rice flour, hypromellose (vegetable capsule), L-leucine, silica.

Suggested use: As a dietary supplement, take one veggie capsule per day with food and water.

Olea25™ Hydroxytyrosol is a trademark of Certified Nutraceuticals, Inc.


by our team of internal scientific & wellness experts


for unsurpased purity, potency safety & quality by internal & third-party labs


by Swanson Health's expert standards for quality products for mind, body & home

Quality Code Approved
  • High-powered antioxidant defense against free radicals

  • The most powerful antioxidant known to modern nutritional science

  • Features Olea25® standardized to 25% hydroxytyrosol

Maximize your body’s protective capabilities with one of the most powerful antioxidants known to modern nutritional science. The phenolic compounds found in olive leaves have long been known to exhibit impressive antioxidant activity by scavenging reactive oxygen species known as free radicals. Now, research indicates that one of these compounds may stand above all others in free radical-scavenging capability: hydroxytyrosol. A metabolite of the phenolic compound known as oleuropein, hydroxytyrosol packs an antioxidant punch few other substances can match, protecting against all five common free radical species with roughly 10 times the oxygen radical absorbance capacity (ORAC) of green tea. That’s a level of broad-spectrum antioxidant protection that surpasses blueberries, strawberries and even acai berries with a wide range of potential benefits for the brain, cardiovascular system, immune system and more. Our Maximum Strength Olive Leaf Extract veggie caps feature Olea25®, an ultra-potent, state-of-the-art extract made exclusively from 100% organically grown olive leaves. The most powerful olive leaf extract on the market today, Olea25® is standardized to an impressive 25% hydroxytyrosol content—the same concentration used in clinical studies. It’s a great way to beef up your body’s antioxidant arsenal for optimal mental and physical vitality.

Terms and Ingredient Definitions

Shipping Weight: .10 lbs


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.

MSRP: $27.99

For our website and catalog, the MSRP is the "Manufacturer's Suggested Retail Price." The MSRP is understood to mean the price at which a manufacturer will recommend a retailer sell a product for in stores, on the internet, or in catalogs. The MSRP of National brand items are dictated to Swanson by each manufacturer. For Swanson brand items, the MSRP is calculated based on a varying percentage above the product's base price.

Disclaimer: Product reviews are provided for informational purposes only. The information or opinions expressed therein are solely those of the contributors and do not necessarily represent those of Swanson Health Products and its employees. Please read full product reviews disclaimer.
1-5 of 10 reviews
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hydroxytyrosol/olive leaf extract
It is an excellent product. It is a good for the heart and brain.
Quality: 4.0 / 5.0
Value: 4.0 / 5.0
Effectiveness: 5.0 / 5.0
Convenience: 5.0 / 5.0
Satisfaction: 5.0 / 5.0
The price was right
Haven't taken it long enough to review its effectiveness, but if it lived up to Swanson quality it should be a good product
Quality: 3.0 / 5.0
Value: 5.0 / 5.0
Effectiveness: 4.0 / 5.0
Convenience: 5.0 / 5.0
Satisfaction: 4.0 / 5.0
Highly Recommend
I order this product every month. It has helped my immunity system in a variety of ways. This is one of those products that I can't live without. The potency is great!
Badly Named Good Product
This is a great product at a reasonable price. The potential health benefits of this antioxidant are amazing. However, I use the "Super Strength" Olive Leaf Extract supplement from Swanson which contains oleuropein. This one is referred to as "Maximum Strength", while it contains hydroxytyrosol and not oleuropein. These two phenolic components of olives are both important and different. Yet the naming convention suggests to the casual onlooker that one is better or stronger than the other. I use both and will until Swanson produces a supplement with both standardized components in one.
Quality: 5.0 / 5.0
Seems like everything about the Ancient Tree of Life, The Olive Tree, is awesome and amazing. I know the long, long history of the wellness value of the Olive Tree, so I decided to include three Olive Leaf Extract capsules daily in my wellness / anti-oxidant / longevity program. Can't have too much of a good thing. Every aspect of the Olive Tree comes through. Works for me.
Quality: 5.0 / 5.0
Value: 5.0 / 5.0
Effectiveness: 5.0 / 5.0
Convenience: 5.0 / 5.0
Satisfaction: 5.0 / 5.0

Q: Why does the color and smell seem to be different than my last order?

A: Natural color variations can occur from batch to batch. Botanical ingredients have a distinct and earthy odor noticeable after opening the bottle.

Swanson Health started in 1969 in Fargo, ND with a mission to offer pure and potent health products at a great value. Over 50 years later, we continue to innovate science-backed vitamins and supplements, delivering wellness solutions that help people live simply healthier together, and find vitality at any age. Click here to learn more about us.

For over 50 years, Swanson Health's research and development team has delivered science-backed health and wellness products to people around the world. Our innovation is guided by clinical research, scientific consensus, emerging research and usage traditions, creating products that help you find vitality at any age. At Swanson, we don't hide our science behind proprietary formulas — we believe in easy-to-read, transparent labelling. What's printed on our labels, is exactly what you'll find in our products.

Swanson Health's purity and potency testing begins with our ingredient sourcing, continues through manufacturing, and goes beyond when a product hits the shelf. Our testing exceeds industry standards, ensuring each product meets our quality guarantees for purity and potency. Swanson facilities are Good Manufacturing Practices (GMP) certified, and we voluntarily participate in third-party, independent laboratory testing. With Swanson, you can be sure you're getting the most pure and potent health products at a great value. Click here to learn more about our quality standards.


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