Abstract: Compositions comprising potassium taurate bicarbonate complexes and/or potassium taurate ascorbate complexes are useful as pharmaceutical compositions and as dietary ingredients in nutritional supplements, medical foods, and other foods. In preferred embodiments, potassium taurate bicarbonate and/or potassium taurate ascorbate complexes are the active ingredient in antihypertensive drug products that are intended to lower or prevent elevated blood pressure, or as dietary ingredients in dietary supplements, medical foods or other foods that are intended to supply a source of potassium, taurine, ascorbate, and/or bicarbonate, or that are intended to help maintain normal blood pressure levels and/or normal muscle mass. In preferred embodiments, potassium taurate bicarbonate complexes are prepared by intermixing potassium bicarbonate and taurine in aqueous solutions, and potassium taurate ascorbate complexes are prepared by intermixing potassium ascorbate and taurine in aqueous solutions.