FSC Calcium Magnesium & Zinc 30 Tablets Calcium, magnesium, and zinc are three of the primary minerals the body needs to gain and maintain good health. Calcium and magnesium assist the maintenance of healthy bones while zinc is important for cell division and growth, and is an essential component required to support the body's immune system. Each Tablet typically provides: Calcium 33mg. Magnesium 166.6mg. Zinc 5mg. Copper 300ug. L-Glutamic Acid 33mg.