Repashy SuperCal HyD Our Micro-Fine Calcium powder with high levels of Vitamin D. For species with high Vitamin levels of Vitamin D requirements, receiving little UVB radiation from natural or artificial sunlight. Also for therapeutic use. Vitamin D-3 50,000 IU/lb. INFORMATION: Our Calcium Carbonate is mined from the Mohave Desert in California, where it was deposited 300 million years ago during the Mississippian Age as a large graveyard of marine animals. Our calcium is micro ground to an average size of 3.5 microns, and provides the ultimate stick when dusted onto insects. Guaranteed Analysis: Moisture max. 6%, Calcium min. 30%, Vitamin D 50,000 IU/lb.