Olive Leaf


The olive tree, one of the oldest cultivated trees is an ancient symbol of peace and hope and a provider of food and medicine. The fruit and its oil are major components of the much-publicised ‘Mediterranean Diet’, renowned for its benefits for cardiovascular health and reducing the impact of ageing.

Botanical name: Olea europea 

Common name: Olive, Olive leaf

Part used: Leaf 

Recently, it is the leaves that have become the focus of attention with a range of potential health benefits being suggested. Research has shown Olive leaf extract to exhibit powerful antioxidant activity as well
as the ability to lower blood pressure. The extract has also been shown to inhibit a number of bacteria and viruses, which has lead to increased interest in its use a tonic for the immune system. This research supports one of the many traditional uses of the herb in which a strong tea, made by boiling the leaves, was used as a treatment for fevers.

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Frequently asked questions

Does olive leaf help with colds and flu?


Olive leaf is traditionally used to support the immune system and help the body through colds, flu and seasonal bugs. Its compounds, including oleuropein and hydroxytyrosol, have shown antimicrobial and antioxidant activity in laboratory studies. Olive leaf has a long history in this area too: in the 1800s, it was used as a remedy for fevers. Many people take olive leaf extract at the first sign of a sniffle or throughout winter.

Can olive leaf help with blood pressure?


Research suggests olive leaf extract may help support healthy blood pressure. Some clinical studies have found that people with mildly raised blood pressure who took olive leaf extract saw modest reductions in their readings. Olive leaf is also thought to support healthy cholesterol and blood sugar levels, making it a popular herb for overall cardiovascular wellbeing. If you have high blood pressure, always talk to your doctor before using olive leaf, and don’t stop any prescribed medication.

What is olive leaf good for?

Olive leaf (Olea europaea) comes from the same Mediterranean tree that gives us olives and olive oil, and is traditionally used to support the immune system and overall wellbeing. Its key active compound is oleuropein, a powerful antioxidant that gives olive leaf its bitter taste and much of its traditional benefit. Olive leaf is popular for winter wellness, as well as for supporting heart health and healthy blood pressure.

How do you take olive leaf?


Olive leaf is most commonly taken as a liquid extract, capsule or tablet. Liquid extracts are often made from fresh leaves and have a strong, bitter taste, so many people mix them with a little water or juice. Olive leaf can also be made into a tea using the dried leaves. For immune support, it’s often taken daily through the colder months or at the onset of symptoms. Always follow the dosage directions on the product label.

Are there any side effects of olive leaf?


Olive leaf is generally well tolerated when taken as directed, though some people may experience mild stomach upset or headaches. Because olive leaf may lower blood pressure and blood sugar, check with your healthcare professional before use if you take blood pressure medication, diabetes medication or blood-thinning medication. It’s also best to seek advice before use if you’re pregnant or breastfeeding, and to check the label’s age guidance before giving it to children.