"Magnesium is an essential mineral, playing a key role in over 300 enzymatic reactions in metabolism. These reactions include those involve in the Krebs'' cycle (the body's main energy production process), energy storage, the breakdown of fatty acids, protein synthesis, DNA metabolism, the relaxation of both voluntary and involuntary muscle tissue, neurotransmitter activity, and hormone regulation. Magnesium is stored primarily in the bones, and plays a role in the absorption of calcium by the bones. Sources naturals'' magnesium chelate is composed of magnesium bound to amino acids from hydrolyzed vegetable protein, for easy assimilation and utilization. Suitable for vegetarians and hypoallergenic."