» Alumina, Magnesium Carbonate, and Magnesium Oxide Tablets contain the equivalent of not less than 90.0 percent and not more than 110.0 percent of the labeled amounts of aluminum hydroxide [Al(OH)₃] and magnesium carbonate (MgCO₃), and not less than 85.0 percent and not more than 115.0 percent of the labeled amount of magnesium oxide (MgO).