Osteo-D 20000 IU is a soft gelatin capsule manufactured by Incepta Pharmaceuticals Ltd., each containing 20,000 IU of cholecalciferol (vitamin D₃). This high-dose formulation is designed to treat and prevent vitamin D deficiency, which can occur due to limited sun exposure, dietary insufficiency, or certain medical conditions. Vitamin D₃ plays a crucial role in calcium and phosphate absorption, essential for maintaining healthy bones and teeth. It also supports immune system function and may help prevent conditions like rickets, osteomalacia, and osteoporosis. Osteo-D 20000 IU is typically taken once weekly for 7 weeks to treat deficiency, followed by a maintenance dose of 1,400–2,000 IU daily. For prevention, a dose of 20,000 IU every 4 weeks is recommended. As with any medication, it should be used under medical supervision to monitor for potential side effects and ensure appropriate dosing