Olive leaf extract and the phenolic component oleuropein can carry various health benefits. The journal “Life Sciences” published a study conducted at the University of Messina, Italy, which reports that oleuropein may be a source of microbial agents protective against intestinal and respiratory tract infections. Another study led by M.T. Khayyal of Cairo University reported that oleuropein has blood pressure-lowering effects in rats, “Life Sciences” notes. Due to its potential benefits, olive leaf extract is currently available in supplement form. It is not currently considered a medical cure for any condition. Use caution if trying olive leaf.

NOW Foods Olive Leaf Extract

NOW Foods offers olive leaf extract in two concentrations, both sold as vegetable-derived capsules. The regular-strength capsules contain 500 mg of olive leaf extract and are standardized to include 6-percent oleuropeins, while the extra-strength capsules feature 18-percent oleuropeins, the company website reports. The extra-strength form also contains 500 mg of echinacea. The products are free of additives, preservatives and pesticides and are suitable for vegetarians and vegans.