Vitamin 03

Vitamin D3, also known as cholecalciferol, is a fat-soluble vitamin that the body can produce when skin is exposed to sunlight. It can also be obtained from certain foods and supplements. It is often produced commercially by treating lanolin (from sheep's wool) with ultraviolet light.

Manufacturers add vitamin D3 to foods to help consumers meet their daily vitamin D needs. It is often found in fortified dairy products, cereals, and some juices. It is also used in some baked goods and frozen meals.

The U.S. Food and Drug Administration (FDA) considers vitamin D to be a nutrient. The National Academies of Sciences, Engineering, and Medicine have established Upper Intake Levels (ULs) for vitamin D. The World Health Organization (WHO) and the European Food Safety Authority (EFSA) have also evaluated vitamin D. Adequate vitamin D intake is important for bone health and immune function. Some research suggests potential links between vitamin D levels and various health outcomes, but more studies are needed.