Cholecalciferol (Vitamin D3)

Cholecalciferol, or Vitamin D3, is a fat-soluble vitamin produced in the skin upon exposure to sunlight, specifically ultraviolet B radiation. It is important for maintaining healthy bones and teeth, supporting the immune system, brain, and nervous system, and regulating insulin levels. Vitamin D3 is often added to fortify foods and available as dietary supplements. It is recognized as GRAS (Generally Recognized as Safe) by the FDA for use as a food additive.