Ortho-D3 40,000 IU Capsule is a high-potency Vitamin D3 supplement designed to address deficiencies and support bone health. Each capsule contains 40,000 International Units (IU) of Cholecalciferol, the natural form of Vitamin D3. Vitamin D3 plays a crucial role in calcium and phosphorus absorption, promoting healthy bones and teeth, and supporting immune system function.