ROVIMIX® Hy•D’ Solution is a stable oil and water emulsion with a milky appearance. The 25-hydroxyvitamin D3 is emulsified in water and vegetable oil as well as in mono and diglycerides of fatty acids. It contains 16.7 mg of 25-hydroxyvitamin D3 per ounce and is miscible in water. BHT is added as an antioxidant.