CALTRAP capsule offered by Geneda Pharma, contains Calcium Citrate 1000 mg, Vitamin D3 200 IU, Zinc 4 mg, and Magnesium 100 mg. Calcium is a mineral that is found naturally in foods. Calcium is necessary for many normal functions of your body, especially bone formation and maintenance. Vitamin D3 is important for the absorption of calcium from the stomach and for the functioning of calcium in the body. Zinc sulfate is used to treat and to prevent zinc deficiency. Magnesium helps keep calcium in the cell to do its job far better.