Super-Concentrated Antioxidant Power of 15 Nutrients to Protect Against Free-Radical Damage. Antioxidants are substances that protect cells from damage caused by free radicals. Combines high concentration of 15 antioxidant nutrients to provide protection against free-radical or oxidative damage to tissue cells. Some of these include:. Riboflavin which helps regenerate antioxidants after they've made free radicals ineffective. Green tea extract and procyanidolic oligomers (PCOs) from grape seeds which can have antioxidant potential that's 50 to 200 times stronger than vitamin E. Concentrated extracts of cabbage garlic ginger and blue-green algae; food based ingredients with a broad range of antioxidant nutrients.