Pycnogenol® 30 mg Vegetable Capsules 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 circulatory, joint and skin health.