SwansonHigh-dose Vitamin D3

Vitamin D3 is a form of vitamin D commonly used in supplements. It is derived from animal sources or produced via a fermentation process. This form is also found in certain foods and is widely used in supplements due to its good stability and widespread availability.

Vitamin D2 (ergocalciferol) is usually derived from plant sources, while D3 (cholecalciferol) more often comes from animal sources or is produced by fermentation. Both forms are used in supplements but differ slightly in structure and origin.

2,000 IU (50 micrograms) is often chosen as a daily dose by people using supplements during periods of less sunlight or when the diet is less varied. It offers a practical supplement to daily intake.

Vitamin D3 is often taken during or after a meal, especially a meal containing some fat. This matches the properties of the supplement, as vitamin D is a fat-soluble substance.