Maintaining the ratio of calcium to phosphorus is important for our pets’ health. Dicalcium phosphate has been used for decades in food production, and makes both minerals readily available to build and repair bones, teeth, tissues, and DNA. There isn’t much of it in Shine because these are trace minerals; you only need a tiny amount to get the benefits—and there are other sources. In our chicken and salmon recipes, for example, we use the whole animal, including the bones; our puppy recipe has eggshells. And our green, smelly tripe, has the perfect ratio of calcium to phosphorus (about 1:1), not to mention that it's great for your dog’s digestion.
We also add calcium magnesium carbonate, which provides magnesium and calcium. The few supplements we use are, like the rest of our food, all human grade, and included for optimal health and balance on the advice of our animal nutritionists.