Natural Factors Pycnogenol - 25 mg - A natural plant extract derived from French Maritime Pine Bark that has shown excellent results as a powerful antioxidant that contains actives that strengthen tissue permeability. As one of the most potent natural scavengers of free radicals, Pycnogenol mops up aggressive radicals before they cause damage by oxidative stress. Additionally it acts as a natural anti-inflammatory, helps generate collagen and hyaluronic acid, and aids in the production of endothelial nitric oxide which helps to dilate blood vessels.