Omical is an organic calcium supplement from natural milk source. While some off-the-shelf calcium supplements are made from calcium carbonates sourced from rocks, oyster shells and bones, Omical is made from pure milk. Milk minerals have been specifically removed and then purified. Omical is low in lactose and fat and is tested free of toxic metals such as arsenic, lead and mercury, pesticides, steroids, hormones and even antibiotics. It also comes from an organic milk source. Each Omical tablet gives your body 250 mg of elemental calcium, equivalent to a glass of milk (210ml).Nutritionists agree that natural foods, particularly dairy products, are the best source of calcium. That's why Omical is such a natural and wholesome form of calcium, suitable even for children and expectant mothers.