Olive Leaf Extract (Oleuropein)

Heart health & circulation

Function & benefits

An extract rich in oleuropein and hydroxytyrosol, antioxidants typical of the Mediterranean diet; clinical trials suggest it supports normal blood pressure and blood lipid levels and improves insulin sensitivity in overweight adults.

Dosage & how to use

Recommended dose	500–1000 mg daily
Best time to take	With breakfast or lunch
Frequency	Split into two doses

Best forms to choose

Olive leaf extract standardised to 15–20% oleuropein, in capsules or as a liquid extract.

Important warnings

Well tolerated; may cause mild stomach upset or headache in the first days

Avoid during pregnancy and breastfeeding, as safety data are insufficient

Drug interactions

It may strengthen blood pressure and diabetes medication, so keep track of your readings when combining them; use with care alongside blood thinners.

View in the supplements guide

Related supplements

Scientific references

Lockyer S et al. Eur J Nutr 2017 — PMID: 26951205
de Bock M et al. PLoS One 2013 — PMID: 23516412

📚 Published sources and research: European Food Safety Authority (EFSA) • National Institutes of Health (NIH - ODS) • PubMed / Cochrane databases

Content last updated: 17 October 2026 · Based on published sources and research (EFSA / NIH / PubMed)

⚖️ Medical disclaimer: The information and data provided here are for health education and nutritional guidance only. They are not a medical diagnosis and never replace a direct consultation with your doctor or pharmacist. Always consult your doctor before starting any supplement, especially during pregnancy or breastfeeding or when taking long-term medication.