Herb
Olive leaf
SaveA polyphenol-rich leaf extract, especially valued for oleuropein, used for immune and cardiometabolic support.
Quick verdict
Promising for mild blood-pressure and antimicrobial support, but the human data is still moderate rather than overwhelming.
Evidence score
A rough internal score reflecting quantity, quality, and consistency of human evidence. Not a clinical recommendation.
What the research shows
Small trials suggest olive-leaf extract can improve blood pressure and some inflammatory markers. In vitro antimicrobial claims are stronger than direct human clinical outcomes.
Benefits
- May modestly improve blood-pressure markers
- Provides oleuropein and antioxidant polyphenols
- Often used for short-course immune support
Dosage notes
Common extract use ranges from 250-1000 mg/day depending on oleuropein standardization.
Side effects
- Dizziness
- GI upset
- Headache
Who should be cautious
May lower blood pressure or blood sugar, so medication users should monitor for additive effects.
What this page cannot tell you
Most human studies are small, short, or use standardized extracts rather than the raw herb.
Leaderboard scores
- Immunity30
- Longevity25
- Recovery15
Write a review
Sign in to write a review.