Acid-A-Cal Formula supports balanced pH levels for proper calcium absorption. Overly alkaline body fluids can make calcium harder to absorb; and calcium is essential for strengthening bones. Acidifying compounds such as ammonium chloride and betaine hydrochloride can help support balanced pH levels. Acid-A-Cal Formula delivers these compounds along with important vitamins, minerals and other natural factors. Contains no yeast-derived ingredients, wheat, soy, dairy, or artificial flavors.