Magnesium [Nervous] is the central atom in the chlorophyll molecule, and in physiology it activates the ATP energy system. More than 300 enzymes require the presence of this mineral. Seventy percent of the body’s magnesium is found in the bones, and the rest is found mainly in the soft tissues and blood. There is more magnesium than calcium in muscle tissue. The brain has twice as much magnesium as any other tissue. Magnesium is necessary for the metabolism of vitamin C, phosphorus, potassium and sodium. It is important to the nervous system and the synthesis of certain proteins. It governs how calcium is used in the body. Each tablet contains 250 mg of magnesium oxide and magnesium amino acid chelate, which provides 62.5 percent of the Daily Value for this nutrient. NSP’s magnesium comes in a base of licorice root, kelp plant, peppermint leaves and white willow bark.