Vitamin D3, 1000 IU, 90 Tablets - Natural FactorsNatural Factors Vitamin D3, 1000 IU, 90 Tablets, provides essential support for overall health. Vitamin D3, also known as the sunshine vitamin, is produced by the body when the skin is exposed to ultraviolet light. This supplement is crucial for immune function, calcium absorption, and the development and maintenance of strong bones and teeth. It also plays a role in regulating calcium levels and maintaining healthy nerves and muscles. Key features of