Source Naturals Calcium and Magnesium Chelate

Amino Acid Chelate with Vitamin D-3. Calcium and magnesium work together in several key physiological processes Features of Source Naturals Calcium and Magnesium Chelate They are important in the regulation of blood pressure and are responsible for healthy muscle function. Calcium is needed for muscle contraction and magnesium for muscle relaxation. In addition, they are both components of skeletal tissue, and magnesium is necessary for calcium absorption into the bones.