Difference Between Vitamin D and Vitamin D3: What You Need to Know

Difference Between Vitamin D and Vitamin D3: What You Need to Know BestDoctorsInTheCity.com March 11, 2026 General Health Vitamin D is a fat-soluble nutrient that supports bone health, immunity, and calcium absorption. It comes in two main forms: Vitamin D2 (ergocalciferol) and Vitamin D3 (cholecalciferol). Vitamin D3 is generally more effective at raising and maintaining […]