Vitamin Vegan D3 is a unique liquid formula developed specifically for vegans, strict vegetarians, and those who prefer a form of vitamin D3 that isn't derived from lanolin or fish oil. This plant-based liquid formula is in the natural form of vitamin D (cholecalciferol), the same form our bodies makes from sunlight and the form our bodies absorbs best.* Suggested Use 0.5 milliliter daily, with food, or as directed by your healthcare professional or pharmacist. For best results, please refrigerate and use within three months after opening.