Supports A Healthy Immune Response Promotes A Healthy Immune System Concentrated, Single-Herb Formula With Antioxidant Action Thanks To Its Antioxidant Properties, Olive Leaf Is Traditionally Used To Help Maintain The BodyâS Natural Immune Defenses And Promote Cardiovascular Health.* At Gaia Herbs, We Use Gentle, Natural Processes To Extract Our Olive Leaf Into A Concentrated Liquid, Preserving Its Primary Active Constituent Oleuropein. With 1,360 Mg Of Olive Leaf Per Serving, The Formula Delivers 100 Mg Of This Beneficial Compound