Olive Leaf Extract

Herbal Supplements

Olive leaf extract, derived from the leaves of the olive tree (Olea europaea), has a long history of traditional use in Mediterranean cultures and has gained modern scientific interest for its diverse bioactive compounds, particularly oleuropein. Research suggests that oleuropein and related polyphenols contribute meaningful antioxidant activity, and studies indicate potential benefits for supporting healthy blood pressure and blood sugar levels already within normal ranges. Preliminary evidence also points to antimicrobial properties, with laboratory research showing activity against a range of bacteria and viruses, though more robust human trials are needed to confirm these effects. Most standardized supplements are concentrated for oleuropein content, which is considered the primary active constituent responsible for the extract's role in supporting immune function and cardiovascular wellness.

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What the research says

Common dosages

These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.

Form Dose range Frequency Studied for Source
Capsule 250–750 mg Daily General health and antioxidant support Commonly referenced range in human supplementation studies standardized to oleuropein content
Extract 500 mg Twice daily Antioxidant support Used in RCTs measuring oxidative stress markers and antioxidant capacity
Extract 500–1,000 mg Daily Blood pressure regulation Based on RCTs including a notable trial showing equivalence to captopril at 500mg twice daily
Extract 250–500 mg Twice daily Blood sugar regulation Common in clinical trials examining glycemic control and insulin sensitivity
Extract 400–1,000 mg Daily Immune function and antimicrobial properties Range observed across clinical and in vivo studies on immune modulation

Common supplement forms

Standardized to oleuropein
Medical Disclaimer: Noyemi provides information from published research for educational purposes only. This content is not medical advice and does not replace consultation with a qualified healthcare provider. Always consult your doctor before starting, stopping, or changing any supplement regimen, especially if you take medications or have existing health conditions.