A finely ground calcium, magnesium and phosphorus suspension with ratios of minerals adjusted to those now emphasized by nutritionists. Zinc and potassium have also been added to make Cal-Mag-Zinc a more complete liquid mineral nutritional supplement.Dietary supplement. A synergistic blend of minerals designed to optimize bone health. This product is not intended to diagnose, treat, cure or prevent any disease. A finely ground calcium, magnesium and phosphorous suspension with ratios of minerals adjusted to those now emphasized by nutritionists. Zinc and potassium have also been added to make Cal-Mag-Zinc a more complete liquid mineral nutritional supplement.