Abstract: Liquid dietary supplement formulation compositions that provide dietary minerals and additional optional ingredients beneficial for health; methods for manufacturing such compositions; and methods for enabling convenient oral ingestion of the formulation ingredients, by adding the same to drinking water, beverages, foods, or meals. The inventive formulation compositions generally include water, water-soluble calcium compound(s), water-soluble magnesium compound(s), and additional optional ingredients, wherein the sum of the concentrations of the calcium and magnesium compounds is most preferably 2 molar or more, up to the point of saturation. The inventive formulation compositions possess inherent resistance to microbial growth.