Natural Factors Hawthorn Phytosome - Hawthorn Berries are rich in flavonoids, which have been shown to dilate peripheral and coronary blood vessels. This action helps to support the heart and reduce the severity and frequency of angina attacks. Hawthorn can also increase the ability of the heart muscle to contract, which helps make the heart pump more efficiently. This herb also has cardio-tonic properties, helping to restore blood pressure to normal, and has been successful in treating irregular heartbeats, spasms of the arteries (Raynaud's), and certain nervous disorders, such as insomnia. Natural Factors Hawthorn Extract is a potent form of this powerful antioxidant and cardio-tonic herb.