Calcium is a very lively mineral chemistry, most of the other elements will combine with calcium, such as calcium phosphate, calcium carbonate (pearl powder, bone meal) and chemical calcium etc. The calcium ionized in the water-soluble pre-ionization conditions, the active of the material was. Due to insoluble combination of general-type calcium such as calcium lactate, calcium sulfate, calcium carbonate, it cannot be ionized and are not easily absorbed by the body. Most of them excreted intact, even though some particles are absorbed without owing itself easily with the Department acidic use and likely to cause stones and other obstacles. The ionized calcium and soluble calcium absorption capacity of the body, and no acidic radical combination, so no side effects.