Hawthorn Berry Powder (Crataegus oxycantha) has the ability to improve oxygen utilization by the heart; increases enzyme metabolism in the heart muscle; is a very mild dilator of coronary vessels; and serves as a peripheral vasodilator, thereby lowering blood pressure and reducing the burden placed on the heart. Hawthorn is used primarily as a cardiac tonic and is considered valuable for improvement of cardiac weakness, angina pectoris, valve murmurs from heart valve defects, an enlarged heart, nerves, depression or unexplained chronic fatigue. It is very effective in relieving restlessness and insomnia.