Olive leaf extract

Tier 2 — promising · Blood pressure · Antiviral · Antioxidant

Helps lower blood pressure through its active compound oleuropein. A 2024 meta-analysis of 12 trials found it significantly reduces blood pressure by approximately 5–6 mmHg systolic. Oleuropein also has confirmed antiviral and anti-inflammatory activity in lab studies. If you are already on blood pressure medication, the combined effect may drop pressure too low — monitor closely.

Dose: 500–1,000 mg/day standardised extract (15–20% oleuropein); monitor blood pressure if on antihypertensives