Natural Support for the Body's Defense System. Olive Leaf has been used for centuries as a health-promoting herb. Research has demonstrated Olive Leaf to possess antioxidant and pathogen-inhibiting properties. Natural Factors Olive Leaf is standardized to contain oleuropein the powerful phytochemical responsible for reinforcing the body' s natural resistance to pathogens.
"We prefer this N. Factors Olive leaf Extract #60 caps because it has 15% Oleuropein compared to the #90 caps, which is only 10% Oleuropein. I'm not sure why they don't state that in the title. That is the important ingredient and makes this more potent."