Make sure your reptile gets the nutrients he needs with reptile supplements from Pet Haus. Reptiles are exposed to a wide variety of foods in nature that they can't get when domesticated. The two most important vitamins and minerals for reptiles are vitamin D3 and Calcium. Vitamin D3 is absorbed through the skin from direct sunlight. Caged reptiles often can't get the vitamin D3 they need for optimal health. Likewise, many reptiles have calcium deficiencies.