SwansonVitamin D3 High Potency

Vitamin D is a fat-soluble vitamin that comes in different forms. Supplements often contain vitamin D3 (cholecalciferol), a form that is widely used due to its good absorption.

Vitamin D2 (ergocalciferol) comes from plant sources and is sometimes used in fortified foods. Vitamin D3 (cholecalciferol) originally comes from animal sources and is the form used in this supplement. The two forms differ slightly in structure and stability.

Vitamin D is often taken with a meal. This is because it is a fat-soluble vitamin, which means absorption in the body is better when combined with fats from food.

Yes, vitamin D3 can be taken daily by adults, especially if you belong to a risk group or during the autumn and winter months when exposure to sunlight is limited.

Vitamin D3 (cholecalciferol) is biologically more active and is generally absorbed more efficiently than vitamin D2 (ergocalciferol).