From the Manufacturer:
Olivenol, Hydroxytyrosol Hidrox, Vegetarian Capsules is the first and only dietary supplement to contain antioxidant polyphenols derived from the pulp of organic olives. Hydroxytyrosol, its principal natural ingredient, has been shown to have the highest free radical scavenging activity ever reported in nature. Scientific research indicates that olive polyphenols help fight free radical damage and help promote cardiovascular wellness, immune system balance, colon & breast health, antimicrobial activity, skin wellness and the reduction of oxidative stress & cholesterol. One dose of Olivenol equals the polyphenol antioxidants of 4-6 oz. of extra virgin olive oil, without the fat and calories.