MTS Nutrition Vega-D3 is 100% Vegan, Non-GMO, and 100% Natural. Vitamin D3 is critical in maintaining bone and tooth health, supporting healthy immune and cardiovascular systems. Vega-D3 uses only VegaDELight, derived from lichen, while most vitamin D3 is derived from sheep wool grease. This ensures a clean, sustainable source of this critical vitamin. 5000 IU Cholecalciferol. Increased Energy. Immune Health. Vegan Friendly. Made in a GMP Facility.