Since 1947 Antioxidant Protection Healthy Leg & Vein Support Gluten, Wheat & Dairy Free Suitable for Vegetarians Kosher Parve Dietary Supplement Pycnogenol is the extract from the bark of the French Maritime Pine Tree, which grows in south-west France. It is a natural, concentrated source of plant-derived proanthocyanidins, a complex of naturally-occurring flavonoids and other biologically active components. Pycnogenol is an antioxidant. In addition, this unique compound supports cardiovascular health, healthy capillaries and circulation in the legs.