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The curious few.
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Know what you're putting in your body.

158 herbs, nutrients, and compounds. What the science says, what tradition knew, and what to watch for. Founding members keep this running.

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HEART FUNCTION

Olive Leaf

Olea europaea

also known as olive leaf extract

Moderate
Olive Leaf — Köhler 1887 botanical illustration

Leaves from the same tree that produces olive oil, used in Mediterranean folk medicine for thousands of years and named in ancient Egyptian and Greek texts. Modern research focuses on cardiovascular and metabolic support, with the most consistent evidence for blood pressure.

  • Modestly lowers blood pressure with daily use
  • Modestly lowers LDL cholesterol
  • Antioxidant action from oleuropein, the main active compound
  • Antimicrobial activity in lab studies — including against some viruses
  • May support healthy blood sugar and insulin sensitivity
  • Long traditional Mediterranean use for general cardiovascular support
Use caution with blood pressure medications — additive lowering
Use caution with diabetes medication — may lower blood sugar
Use caution with blood thinners
Stop two weeks before surgery
Skip during pregnancy and nursing — limited safety data on concentrated extracts
Generally well tolerated; mild stomach upset and headache occasionally reported

Memorial Sloan Kettering About Herbs · EMA Herbal Medicinal Product Monographs · American Botanical Council HerbMedPro · Memorial Sloan Kettering About Herbs · EMA Herbal Medicinal Product Monographs · American Botanical Council HerbMedPro

Works with
Garlic Olive leaf (oleuropein, ACE inhibition, antimicrobial) and garlic (allicin, blood pressure, antimicrobial) are combined in cardiovascular and immune protocols.
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The curious few.
50 founding spots left

Know what you're putting in your body.

158 herbs, nutrients, and compounds. What the science says, what tradition knew, and what to watch for. Founding members keep this running.

$60 /year

Founding rate — locked for life. Regular price after launch: $96/year.

  • ✓ Full access to all 158+ entries
  • ✓ Print-ready reference card for every herb
  • ✓ Monthly curated set — 5 herbs, one body system
  • ✓ The Sunday Letter — weekly research digest
  • ✓ Bookmarks synced across devices
  • ✓ Founding rate locked forever
Become a founding member

Cancel any time. No questions asked.