Adora Calcium Supplements contain milk. Although Adora Calcium in Dark Chocolate does not have milk as an ingredient, since it is made on the same equipment as Adora Calcium in Milk Chocolate, it contains traces of milk. Those individuals with severe milk allergies should not consume Adora Calcium Supplements. Likewise, Adora Calcium Supplements are made in a facility that processes tree nuts, so individuals with severe nut allergies should be cautious. The vitamins and minerals used in Adora Calcium Supplements meet standards of the United States Pharmacopeia (USP), and they are tested to insure they are free from heavy metals.