Science-Based Nutrition Helps Maintain Blood Pressure within a Healthy Range Dietary Supplement Vegetarian Doctor’s Best Grape Seed Extract with MegaNatural-BP contains a clinically proven ingredient that helps support healthy blood pressure. MegaNatural-BP is structurally unique providing 90-95% biologically active polyphenols. It is selectively extracted for improved bioavailability and greater absorption compared to other grape seed extracts. Our grape seed extract comes from California-grown grapes and is tested to assure consistency in every softgel. Helps maintain blood pressure within a healthy range. Helps support healthy blood vessels. Helps produce nitric oxide, important for circulatory health. Veggie Softgels, made with a healthy gelatin-free alternative to suit your lifestyle.