Vitamin D-3, or cholecalciferol, is the natural, active form of vitamin D for your body -- the same form of the vitamin that your own body produces in the sun, but without the risky UV exposure. Most vitamin D3 supplements are made from lanolin secreted from sheep skin. Naturelo Vegan Vitamin D3 is sustainably sourced from wild-harvested lichen with no animal byproducts of any kind. Made in the USA in a GMP compliant facility. Non GMO, vegetarian, vegan, and gluten free. Does NOT contain soy, dairy, yeast, eggs, nuts, caffeine, preservatives, or coloring.