Vitamin D3

Vitamin D3, also known as cholecalciferol, is a crucial fat-soluble vitamin that plays a vital role in maintaining strong bones, supporting immune function, and enhancing calcium absorption. Unlike Vitamin D2, which is plant-derived, D3 is naturally produced in the skin when exposed to sunlight and is also found in animal-based foods like fatty fish, egg yolks, and fortified dairy products. Deficiency in Vitamin D3 can lead to weakened bones, fatigue, and a compromised immune system.