What Is Vitamin D3? Cholecalciferol better known as Vitamin D3 is a form of Vitamin D. It transforms into a hormone in the blood stream and helps in the absorption of calcium and phosphate. It is an essential nutrient needed by our body for the maintenance of healthy bones and teeth and also overall health. Vitamin D3 helps the kidney to recycle phosphate back into the blood stream, leading to the appropriate balance of pH levels. Vitamin D3 also helps in treatment of underactive parathyroid glands. The primary difference between vitamin D2 and D3 is that Vitamin D2 is obtained from dairy products and other food sources, while Vitamin D3 is naturally made by the body when exposed to sunlight and as such also called as sunshine vitamin. For this test of Vit D3 contact us at "GLOVISION DIAGNOSTICS" KONDWA BK, PUNE Best Diagnostic Centre Best Sonography Centre Best Pathology Centre Best Digital X RAY Best Centre for 2D Echo Best Centre for ECG