Herbalists have long believed in the capabilities of hawthorn leaves to improve cardiovascular health. To support blood-flow and healthy blood pressure. use Hawthorn Extract 300 mg 90 vcaps by NOW. Hawthorn enhances vascular integrity and cardiovascular muscle tone. Formulated with powerful antioxidant flavonoids. like standardized vitexin. the contents of these vegetarian capsules can help support healthy-range blood pressure.