Nivagens Vitamin D3 helps to support teeth and bone health, provide immune support, and promote healthy muscle function. Our original formula delivers the active form of vitamin D produced by the body as a result of sun exposure, without exposure to the suns harmful UVB rays. Ingredients meet US Pharmacopoeia standards. Each capsule contains 50,000 IU Vitamin D3 (as Cholecalciferol), providing 12,500% Daily Value.