NOW Coral Calcium Plus aims to support various health goals, particularly bone and heart health, with its combination of coral calcium, magnesium, and vitamin D2. The blend of magnesium forms (oxide, citrate, aspartate) is a positive, as it provides both elemental magnesium (from oxide) and more bioavailable forms (citrate, aspartate) that are better absorbed and gentler on the digestive system, contributing to nerve and muscle function, energy production, and relaxation. However, the calcium source, coral calcium, is generally considered similar to calcium carbonate in terms of absorption, which is best taken with food. The choice of Vitamin D2 over D3 is a notable disadvantage, as D3 is more efficiently utilized by the body to raise serum vitamin D levels, crucial for calcium absorption and bone mineralization. The calcium to magnesium ratio (500mg Ca to 750mg Mg) leans heavily towards magnesium, which might be beneficial for individuals seeking magnesium's specific benefits for stress, sleep, or muscle function, but less aligned with the typical 2:1 or 1:1 Ca:Mg ratios often recommended for primary bone density support.