Easy capsule administration with a balling gun. Positive delivery: Cows receive the dose delivered. One dose of four CAL-D CAPS contains 28 grams of calcium, for immediate and sustained delivery. Rapid & slow release calcium in one product. Contains 20,000 IU of Vitamin D3 for proper calcium utilization with 2 grams of phosphorus to help with complex fresh cow problems. The combination of CAL-D CAPS and RumenAider Cattle Capsules will support appetite and feed consumption