Dropper for Easy Dosing Bone Health Positive Mood Healthy Immunity Vegan 1000 I.U. D3 Non-GMO Verified Third-Party Purity Tested Dietary Supplement Contains Vitashine D3 Registered Vegan 100% vegan vitamin D3 for healthy bones, mood, and immune system function. . Supports Calcium Absorption for Bone Health Helps Regulate Mood and Sleep Rhythms Supports Immune System Function Vitamin D has long been known for its important role in regulating calcium and phosphorus levels, and in increasing mineralization in the bones. Nordic Naturals Vitamin D3 Vegan is a unique formula specially developed for vegans and strict vegetarians, and is registered by the Vegan Society. Sourced from lichen, this plant-based liquid formula is in the natural form of vitamin D (cholecalciferol), and is a better absorbed and utilized form of vitamin D to support bone, mood, and immune health, and to help regulate sleep rhythms.