Vitamin D. Our farmers pledge no artificial growth hormones (no significant difference has been shown in milk from cows treated with the artificial growth hormone rBST and non rBST treated cows). Backed by our Five Point Purity Promise. Since 1925. Grade A. Pasteurized. Homogenized. www.dairypure.com. Comments? 1-800-395-7004. Gluten free.