Carlson's Chelated Cal-Mag stands out for its commitment to mineral bioavailability, featuring Calcium Bisglycinate and Magnesium Glycinate Chelate. These chelated forms are superior for absorption compared to common mineral salts and are much less likely to cause digestive upset. The balanced 1:1 ratio of calcium to magnesium (200mg each) is beneficial, as magnesium is a critical co-factor for calcium metabolism, bone formation, and preventing calcium calcification in soft tissues. While the quality of the minerals is high, the 200mg elemental calcium dose is relatively modest for a primary adult calcium supplement, potentially requiring multiple servings or integration with dietary calcium. A key area for improvement is the absence of Vitamin D3, which is indispensable for maximizing calcium absorption and utilization for bone health.