Hydroxytyrosol and Olive Leaf Extract: Natural Support for Your Health and Wellness

Learn more about the connection between hydroxytyrosol and olive leaves

For over 50 years, Comvita has worked with nature to support everyday wellness.

While Mānuka Honey is well known in New Zealand, Olive Leaf Extract may be less familiar, yet it’s long been valued for its natural compounds. At Comvita, we craft our Olive Leaf Extract from fresh-picked leaves grown on our own groves in Queensland, Australia, carefully processed to retain their natural phenolic compounds. 

Among these are oleuropein and hydroxytyrosol, two bioactive compounds that continue to spark growing scientific interest for their natural, beneficial properties.

This guide discusses what hydroxytyrosol is, why it's being studied,, and how Comvita’s Olive Leaf Extract makes it simple to explore the natural benefits of the olive leaf.

What are hydroxytyrosol polyphenols?

Hydroxytyrosol is a naturally occurring compound found in olives and olive leaves.

As part of the polyphenol family, it belongs to a group of plant-based antioxidants studied for their role as plant-based antioxidants. Because of its small molecular weight, hydroxytyrosol is easily absorbed by the body, which is why it continues to attract scientific attention as one of the most bioavailable olive compounds.

If you’re looking for a hydroxytyrosol supplement, Olive Leaf Extract is considered one of the best sources of hydroxytyrosol, offering a much higher level of concentration compared to olive oil.

Oleuropein: A precursor to hydroxytyrosol

Oleuropein is the dominant phenolic compound in olive leaves. It’s a natural indicator of freshness, and when broken down in the body, it converts into hydroxytyrosol, amplifying the extract’s antioxidant profile. 

Why Comvita prioritises oleuropein:

• Acts as a benchmark for the strength and integrity of every batch
• Supports the extract’s overall antioxidant activity
• Verified through transparent lab testing to ensure reliable levels

This combination of oleuropein and hydroxytyrosol explains the extract’s recognised antioxidant capacity and the interest in its potential benefits for everyday wellness.

How do the phenolic compounds in Olive Leaf Extract support wellness?

Comvita Olive Leaf Extract is naturally rich in hydroxytyrosol and oleuropein. Together, these beneficial compounds act as antioxidants, which are known to help neutralise free radicals.

Researchers are also investigating Olive Leaf Extract in areas such as cardiovascular health, blood sugar balance, and immune system health. While findings remain preliminary, this growing interest reinforces why olive leaves have been valued for centuries in Mediterranean traditions.

Each bottle of Comvita Olive Leaf Extract is crafted from fresh-picked leaves to retain these beneficial compounds, offering a simple way to add olive goodness to your diet.

Note: Olive Leaf Extract oral liquid is not recommended for children under 12 years of age. Capsules are not suitable for children under 7. Avoid use during pregnancy or breastfeeding unless advised by your healthcare professional.

We’re Australia’s number one Olive Leaf Extract brand*

Comvita has been leading the way with Olive Leaf Extract in Australia for over 25 years - we’re the number one brand for a reason* - and now this trusted product is available in New Zealand.

Our range is crafted from fresh-picked leaves and backed by decades of expertise, with every batch traceable and tested for quality. Each product reflects our commitment to delivering fresh, potent, and reliable olive leaf supplements.

• Fresh-picked leaves from our own groves in Queensland
• Proprietary extraction methods performed within hours to retain natural potency
• Transparent lab testing to verify oleuropein and hydroxytyrosol content
• A complete range of high-strength supplements designed to suit different preferences

Whether you prefer our flavoured oral liquids, high-strength capsules, lozenges with UMF™ 10+ Mānuka Honey, or oral spray for hygiene support, Comvita offers a trusted way to incorporate antioxidant-rich olive leaf as part of a balanced diet.

*Circana, Aus National Pharmacy Scan, Natural Cold & Flu, MAT to 06.04.25

Frequently Asked Questions

What is the best source of hydroxytyrosol?

While hydroxytyrosol is found in small amounts in olives and extra virgin olive oil, Olive Leaf Extract provides a significantly higher concentration. Comvita’s fresh-picked olive leaves and proprietary extraction process deliver a reliable, bioavailable source of this well-recognised polyphenol.

Is hydroxytyrosol safe to take daily?

When taken as directed, Olive Leaf Extract is suitable for most adults. Always follow label instructions and consult your healthcare professional if you are pregnant, breastfeeding, or have a medical condition.

What are the side effects of hydroxytyrosol?

Olive Leaf Extract is plant-based and suitable for most people. As with any supplement, some individuals may experience sensitivity. Discontinue use if adverse reactions occur and seek professional advice.

When should you take hydroxytyrosol?

Comvita Olive Leaf Extract can be taken daily, with or without food. You can choose the format that fits your lifestyle — once-daily capsules, great-tasting oral liquid, or a convenient spray.

Support your wellness naturally with Comvita’s Olive Leaf Extract

Olive leaves have been valued for centuries in Mediterranean diets, and today they’re gaining interest in New Zealand as a natural source of antioxidant support.

With Comvita, you can explore this tradition with confidence, from capsules to oral liquids and lozenges. Each product preserves the natural nutrients that make Olive Leaf Extract one of the best hydroxytyrosol supplements available. 

Explore our Olive Leaf Extract products and find the format that fits your routine.