Naka Magnesium with Hawthorn Berry - Some people who suffer from high blood pressure, irregular heartbeat, or cramps or pains & constipation may be surprised to learn that a deficiency of one simple mineral - magnesium - may be at the root of the problem. Magnesium helps maintain normal muscle and nerve function, keeps the heart rhythm steady, and bones strong. It is also involved in energy metabolism and protein synthesis. Hawthorn is one of the most valuable cardiovascular tonics available because it is rich in flavonoids, which are shown to dilate peripheral and coronary blood vessels. This action helps alleviate hypertension and high blood pressure and can reduce the severity and frequency of angina attacks. Hawthorn has also been used to treat irregular heartbeats.