Vitamin D3 5000 IU 360 softgels Carlson LabsCarlson Vitamin D3 5,000 IU (125 mcg) is the preferred form of vitamin D that's important for promoting strong bones, supporting immune system health, and helping to regulate calcium and phosphorus metabolism. Higher levels of vitamin D3 in the blood are associated with strong bones and good health, as well as a strong immune system. Each soft gel provides 5,000 IU (125 mcg) of vitamin D3. These statements have not been evaluated by the Food and Drug