Viridian Vitamin D3 1000iu contributes to the maintenance of normal bones, teeth, muscle function and immune function as well as normal absorption of calcium and phosphorus. As fear of sun-exposure has grown and lifestyles have become more sedentary, exposure to the sun has dropped dramatically and vitamin D deficiency and the incidence of rickets has surged. All Vitamin D supplements from Viridian Nutrition are vegan. Viridian Vitamin D3 1000iu is derived from lichen. Benefits- Maintains the health of bones and teeth and muscle function- Contributes to normal blood calcium levels- Contributes to normal absorption of calcium and phosphorus- Contributes to the normal function of the immune system- Helps to reduce the loss of bone mineral in post-menopausal women How to UseAs a food supplement, take one to two capsules of Viridian Vitamin D3 1000iu daily with food, or as directed by your healthcare professional. Vitamin D is a fat-soluble vitamin, which means it is better absorbed in the body when taken with a meal that contains fats.