The olive tree (Olea europaea) is a cornerstone of Mediterranean culture and health practices. Revered for centuries, its benefits extend far beyond the well-known olive fruit and oil. Olive leaves, in particular, have drawn growing interest from both traditional herbalists and modern science due to their therapeutic properties.

This article reflects both the scientific literature and my own experience as a grower. These leaves were grown right here in my greenhouse, carefully harvested by hand, dried under clean, controlled conditions, and packaged in small batches to ensure quality. Whether you’re brewing a tea or exploring more concentrated extracts, this is a product I not only believe in — I personally use it.

Medicinal Uses and Health Benefits of Olive Leaves

Modern research supports many of the traditional claims about olive leaves, especially their powerful bioactive compounds.

• Antioxidant and Anti-Inflammatory Effects Olive leaf extract (OLE) is rich in oleuropein and hydroxytyrosol, both potent antioxidants. These compounds help combat oxidative stress and may reduce inflammation in the body. Source
• Cardiovascular Health Olive leaf extract has demonstrated positive effects on blood pressure regulation and cholesterol profiles. A randomized study showed OLE reduced systolic and diastolic pressure and improved lipid profiles in pre-hypertensive subjects. Source
• Metabolic and Weight Management Animal studies show olive leaf extract reduces plasma triglycerides, fat storage, and body weight, suggesting potential for managing obesity and metabolic syndrome. Source
• Neuroprotective and Cognitive Benefits Recent studies suggest OLE may delay age-related cognitive decline, improve exercise performance, and support mood regulation. Source

Preparation: How to Extract Olive Leaf Compounds

Olive leaf tea and alcohol tinctures are both common methods for home use, but here’s a basic method for making an alcohol extract:

1. Harvest fresh, healthy olive leaves or use dried leaves (organic, pesticide-free).
2. Grind or tear the leaves to increase surface area.
3. Place in a jar and cover with high-proof alcohol (vodka or grain alcohol).
4. Seal and store in a cool, dark place for 4–6 weeks, shaking occasionally.
5. Strain the liquid and store in amber dropper bottles.

Using Olive Leaf Extracts and Teas

The method you choose to prepare olive leaves can influence which compounds you extract. Ethanol-based tinctures, for example, tend to pull a wider spectrum of bioactives — including fat-soluble and semi-polar compounds like oleuropein and hydroxytyrosol — making them particularly potent. Water infusions, such as tea, primarily extract hydrophilic compounds, offering a milder but still beneficial alternative.

You can use either one or both, depending on the intended effect. Tinctures offer a concentrated option, great for shorter-term or more acute needs. Teas and glycerites are gentler and more accessible for daily support, especially if you’re avoiding alcohol.

For those avoiding alcohol or seeking simpler methods, olive leaves can be consumed as a tea or made into a glycerite extract.

• Olive Leaf Tea: Steep 1–2 teaspoons of dried olive leaves in hot (not boiling) water for 10–15 minutes. Drink 1–3 cups daily. This method is gentle and suitable for ongoing use.
• Glycerite Extract: Mix dried, crushed olive leaves with food-grade vegetable glycerin and water (typically 3:1 glycerin to water). Steep for 4–6 weeks, strain, and bottle. Ideal for alcohol-free extracts.
• Capsules and Powders: Standardized olive leaf supplements are widely available and allow for precise dosage, typically 500–1,000 mg per day, though doses vary by need and product. Consult a health professional for tailored advice.

Disclaimer on Use and Dosage

While olive leaf preparations are generally well tolerated, moderation is key. Overconsumption — particularly of concentrated extracts or powdered whole leaf — may lead to side effects such as gastrointestinal discomfort, headaches, or lightheadedness due to lowered blood pressure or blood sugar. If you’re on medication for hypertension or diabetes, speak with your healthcare provider before use.

Typical daily intake for olive leaf extract is 500–1,000 mg, standardized to 20% oleuropein. For powdered whole leaf, begin with 1/4 to 1/2 teaspoon per day, adjusting slowly as needed.

Growing and Caring for Olive Trees

Olive trees are drought-tolerant and thrive in full sun with well-drained soil. Here are a few care tips:

• Soil: Sandy or loamy soil is ideal. Avoid waterlogged conditions.
• Watering: Moderate; let the soil dry out between watering.
• Pruning: Prune annually to improve airflow and shape.
• Temperature: Best in zones 8-11; can tolerate light frosts but protect from harsh freezes.
• Container Growing: Dwarf varieties can thrive in pots and be brought indoors for winter in colder climates.

Olive leaves represent a powerful yet often overlooked aspect of the olive tree’s benefits. Backed by traditional use and modern science, they offer a safe, natural way to support cardiovascular, metabolic, and neurological health. With the added advantage of growing the plant at home, incorporating olive leaves into your wellness routine is both accessible and sustainable.