"Together's vegetarian Vitamin D is made from nutritional yeast and includes natural metabolites, which are essential for Vitamin D absorption. When the sun shines on our skin metabolites are created in our bodies to ensure that the sunlight is converted to Vitamin D. Because Together's Vitamin D already includes these metabolites it can effectively latch on to Vitamin D receptors in the body, be better absorbed and delivered to the right places. Non-food based forms of Vitamin D do not include these metabolites. We don't add anything else and simply enclose the specially grown and gently powdered food into 100% vegetable capsules. The capsules are packed into a handy re-sealable pouch offering minimal packaging to save you money and for convenience when on the go. Free from: Wheat; live yeast; starch; gluten; milk products (lactose); added sugars; synthetics; additives; colourings; flavourings; preservatives and GM ingredients."